Atlasiuk Olena Mykolaivna
Education
Institute of Mathematics, NAS of Ukraine (2016-2020)
Department of Nonlinear Analysis, Ph.D. Student
Kherson State University (2015-2016)
Faculty of Physics, Mathematics and Informatics, master's degree (with honors)
Kherson State University (2011-2015)
Faculty of Physics, Mathematics and Informatics, bachelor's degree (with honors)
Department of Nonlinear Analysis, Ph.D. Student
Kherson State University (2015-2016)
Faculty of Physics, Mathematics and Informatics, master's degree (with honors)
Kherson State University (2011-2015)
Faculty of Physics, Mathematics and Informatics, bachelor's degree (with honors)
Dissertations
Doctor of Philosophy "One-dimensional Fredholm boundary-value problems with parameter", Kyiv, Institute of Mathematics, National Academy of Sciences of Ukraine, November 30, 2020
Research interests
Differential equations
Functional analysis
Linear systems of ordinary differential equations of arbitrary order on a finite interval with the most general (generic) inhomogeneous conditions in Sobolev spaces of arbitrary integer order are studied. These boundary conditions may contain derivatives of the unknown vector-valued function of integer and/or fractional orders equal to or greater than the order of the differential equation. Such boundary conditions naturally arise in some applied problems. The boundary conditions are given by an abstract bounded linear operator acting on vector-valued functions from the Sobolev space to the finite-dimensional complex space. Such operators have a unique analytical representation. The coefficients of the differential equation and the operator of the boundary condition depend on a parameter belonging to some compact interval of the real axis.
The character of the solvability of such problems is investigated, and their Fredholm properties are established. We introduced the notion of a rectangular number characteristic matrix of the problem. The index and the dimensions of the problem kernel and co-kernel of this matrix coincide, respectively, with the index and the dimensions of the problem kernel and co-kernel of the inhomogeneous boundary-value problem. Unlike the index, d-characteristics are unstable even with respect to small (in the norm) finite-dimensional perturbations. We give examples in which the characteristic matrix can be explicitly found. We also prove a limit theorem for a sequence of characteristic matrices. Necessary and sufficient conditions were found under which the operators generated by the differential expression and the boundary conditions uniformly or strongly converge in the corresponding Sobolev spaces.
Constructive necessary and sufficient conditions are obtained that guarantee the continuity of the solutions of the boundary-value problems with respect to the parameter at some point of the compact interval of the real axis. As a result, limit theorems for solutions to the studied problems were obtained. Moreover, it was established that the solutions of an arbitrary inhomogeneous well-posed boundary-value problem are the limits of the solutions of boundary-value problems with polynomial coefficients and multipoint boundary conditions that do not depend on the right-hand side of the problems. Two-sided estimates of the rate of convergence of the considered problems were obtained.
The results obtained have been applied to the principles of averaging for solutions of problems with multipoint boundary conditions. We considered the most general class of multipoint linear boundary-value problems for systems of ordinary differential equations of any order whose solutions belong to the Sobolev space. Let us establish explicit sufficient conditions for the solution of the multipoint boundary-value problem to be continuous with respect to the parameter in the Sobolev space. The points of the segment appearing in the limit condition are not fixed and depend on the parameter. Also, the number of points in each series is dependent on the parameter.
Functional analysis
Linear systems of ordinary differential equations of arbitrary order on a finite interval with the most general (generic) inhomogeneous conditions in Sobolev spaces of arbitrary integer order are studied. These boundary conditions may contain derivatives of the unknown vector-valued function of integer and/or fractional orders equal to or greater than the order of the differential equation. Such boundary conditions naturally arise in some applied problems. The boundary conditions are given by an abstract bounded linear operator acting on vector-valued functions from the Sobolev space to the finite-dimensional complex space. Such operators have a unique analytical representation. The coefficients of the differential equation and the operator of the boundary condition depend on a parameter belonging to some compact interval of the real axis.
The character of the solvability of such problems is investigated, and their Fredholm properties are established. We introduced the notion of a rectangular number characteristic matrix of the problem. The index and the dimensions of the problem kernel and co-kernel of this matrix coincide, respectively, with the index and the dimensions of the problem kernel and co-kernel of the inhomogeneous boundary-value problem. Unlike the index, d-characteristics are unstable even with respect to small (in the norm) finite-dimensional perturbations. We give examples in which the characteristic matrix can be explicitly found. We also prove a limit theorem for a sequence of characteristic matrices. Necessary and sufficient conditions were found under which the operators generated by the differential expression and the boundary conditions uniformly or strongly converge in the corresponding Sobolev spaces.
Constructive necessary and sufficient conditions are obtained that guarantee the continuity of the solutions of the boundary-value problems with respect to the parameter at some point of the compact interval of the real axis. As a result, limit theorems for solutions to the studied problems were obtained. Moreover, it was established that the solutions of an arbitrary inhomogeneous well-posed boundary-value problem are the limits of the solutions of boundary-value problems with polynomial coefficients and multipoint boundary conditions that do not depend on the right-hand side of the problems. Two-sided estimates of the rate of convergence of the considered problems were obtained.
The results obtained have been applied to the principles of averaging for solutions of problems with multipoint boundary conditions. We considered the most general class of multipoint linear boundary-value problems for systems of ordinary differential equations of any order whose solutions belong to the Sobolev space. Let us establish explicit sufficient conditions for the solution of the multipoint boundary-value problem to be continuous with respect to the parameter in the Sobolev space. The points of the segment appearing in the limit condition are not fixed and depend on the parameter. Also, the number of points in each series is dependent on the parameter.
Experience
1 April 2025 - until now, Postdoctoral fellow, Department of Mathematics and Statistics, University of Helsinki
1 February - 31 March 2025, Visiting researcher, Department of Mathematics, Faculty of Natural, Mathematical & Engineering Sciences, King's College London
1 April 2024 - 31 January 2025, Postdoctoral fellow, Department of Mathematics and Statistics, University of Helsinki
1 April 2022- 31 March 2024, Postdoctoral fellow, Department of Evolutionary Differential Equations, Institute of Mathematics, Czech Academy of Sciences
September 2022 - January 2024, Assistant, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"
2022 - until now, Researcher, Laboratory of differential equations with partial derivatives, Institute of Mathematics, National Academy of Sciences of Ukraine
November 2020 - 2022, Junior researcher, Differential Equations and Oscillation Theory Department, Institute of Mathematics, National Academy of Sciences of Ukraine
2018 - October 2020, Chief Software Engineer, Differential equations and oscillation theory Department, Institute of Mathematics, National Academy of Sciences of Ukraine
August 2017 - 2018, Senior Engineer, Differential equations and oscillation theory Department, Institute of Mathematics, National Academy of Sciences of Ukraine
August 2016 - October 2016, Methodist, Kherson Regional Center for Educational Quality Assessment
February 2016 - July 2016, Senior laboratory assistant, Kherson State University
1 February - 31 March 2025, Visiting researcher, Department of Mathematics, Faculty of Natural, Mathematical & Engineering Sciences, King's College London
1 April 2024 - 31 January 2025, Postdoctoral fellow, Department of Mathematics and Statistics, University of Helsinki
1 April 2022- 31 March 2024, Postdoctoral fellow, Department of Evolutionary Differential Equations, Institute of Mathematics, Czech Academy of Sciences
September 2022 - January 2024, Assistant, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"
2022 - until now, Researcher, Laboratory of differential equations with partial derivatives, Institute of Mathematics, National Academy of Sciences of Ukraine
November 2020 - 2022, Junior researcher, Differential Equations and Oscillation Theory Department, Institute of Mathematics, National Academy of Sciences of Ukraine
2018 - October 2020, Chief Software Engineer, Differential equations and oscillation theory Department, Institute of Mathematics, National Academy of Sciences of Ukraine
August 2017 - 2018, Senior Engineer, Differential equations and oscillation theory Department, Institute of Mathematics, National Academy of Sciences of Ukraine
August 2016 - October 2016, Methodist, Kherson Regional Center for Educational Quality Assessment
February 2016 - July 2016, Senior laboratory assistant, Kherson State University
Talks on conferences
“Café with Marie” event organized by the Marie Curie Alumni Association (MCAA) Finland Chapter, 29 October 2025 (online meeting)
Olena Atlasiuk. Generic inhomogeneous boundary-value problems in Sobolev spaces.The King's College London Analysis seminar, 2 October 2025. https://sites.google.com/view/kclanalysisseminar
Atlasiuk Î., Mikhailets V. Sobolev space aspects of differential equations. 12th International Skorobohatko Mathematical Conference, 23 - 25 September 2025, Lviv, Ukraine: Abstracts. Institute for Applied Problems of Mechanics and Mathematics, P. 6. http://www.iapmm.lviv.ua/conf_skorob2025/index.html (Oral talk)
Olena Atlasiuk, Convergence and approximation of solutions of inhomogeneous boundary-value problems in Sobolev spaces. Spectral Theory and Differential Operators, September 15-19, 2025, Graz, Austria, abstract, Graz University of Technology https://www.math.tugraz.at/diffop2025/index.html (Oral talk)
Olena Atlasiuk, Volodymyr Mikhailets. On differential systems in Sobolev spaces with generic inhomogeneous boundary conditions. International workshop on modern problems of analysis, optimization, approximation, and their applications, June 25-27, 2025, Roma, Italy, abstract, Uninettuno University https://sites.google.com/uninettunouniversity.net/iwmpaoata/home?authuser=0 (Oral talk)
Atlasiuk Îlena. On differential systems in Sobolev spaces with generic inhomogeneous boundary conditions. Recent advances in operator theory and its applications, June 3-6, 2025, Milan, Italy, abstract https:http://iapmm.lviv.ua/chyt2025/indexen.html (Oral talk) https://sites.google.com/view/qmp25-intensiveperiod/workshops/workshop-3-6-june?authuser=0
Atlasiuk Îlena. Approximation problem for generic boundary-value problems in Sobolev spaces. International Conference of Young Mathematicians, June 4-6, 2025, Kyiv, Ukraine, abstract https:http://iapmm.lviv.ua/chyt2025/indexen.html (Oral talk) https://www.imath.kiev.ua/~young/youngconf2025/index.php?module=4&lang=en
Atlasiuk Îlena. Generic boundary-value problems in Sobolev spaces with a parameter. THE CONFERENCE OF YOUNG SCIENTISTS «PIDSTRYHACH READINGS – 2025», May 27-29, 2025, Lviv, Ukraine, abstract https:http://iapmm.lviv.ua/chyt2025/indexen.html (Oral talk)
Atlasiuk Îlena, Volodymyr Mikhailets. ODE-systems with boundary inhomogeneous conditions containing higher-order derivatives. International Workshop within the framework of the HORIZON-2020 project SOMPATY, May 12-16, 2025, Kyiv, Ukraine, abstract (SOMPATY-2025) https://sites.google.com/view/sompaty-nasu-2025/work-program?authuser=0 (Oral talk)
Atlasiuk Îlena. 3 years abroad. Workshop of Ukrainian women mathematicians, 12 May 2025, Online. Institute of Mathematics of the National Academy of Sciences of Ukraine https://may12.womeninmaths.org/node/1417 (Oral talk)
Atlasiuk Îlena. On continuity in a parameter of solutions to generic boundary-value problems in Sobolev spaces. Generalized Functions Online Workshop dedicated to the International Day for Women in Mathematics and the birthday of Maryam Mirzakhani, 12 May 2025, Online: Abstracts. Technische Universität Wien, University of Novi Sad, University of Vienna, 5th edition, P. 2. https://sites.dmi.uns.ac.rs/gfws2025/ (Oral talk)
Atlasiuk O. ODE-systems with boundary conditions containing higher order derivatives. The International Centre for Mathematics in Ukraine (ICMU) Winter School "Random matrices, random analytic functions, and non-linear PDEs", 13-19 January 2025, the “Vodohray” resort, Chynadiyovo village, Zakarpattia, Ukraine. (Poster)
Mikhailets Vladimir, Atlasiuk Îlena. ODE-systems with boundary inhomogeneous conditions containing higherorder derivatives. International Workshop on the Qualitative Theory of Differential Equations ''QUALITDE - 2024'', 21 - 23 December 2024, Tbilisi, Georgia: Abstracts. Tbilisi: A. Razmadze Mathematical Institute of I. Javakhishvili Tbilisi State University, P. 204 - 208.
Atlasiuk O. ODE-systems with boundary conditions containing higher order derivatives. 11th International Conference on “Function Spaces, Differential Operators, and Nonlinear Analysis”, 22 - 28 September 2024, Oberhof, Germany: Abstracts. Friedrich Schiller University of Jena, 2024. (Oral talk)
Atlasiuk, O.; Mikhailets, V. ODE-systems with boundary conditions containing higher order derivatives. 9th European Congress of Mathematics, Seville, Spain: Abstracts (2024)
Meetings of the Society of European Women in Mathematics, July 14th 2024, Seville, Spain
Atlasiuk, O. Approximation of solutions to generic boundary-value problems in Sobolev spaces. Summer School on Current Topics in Mathematical Physics, Zurich, Switzerland: Abstracts (2024)
Atlasiuk O. ODE-systems with boundary conditions containing higher order derivatives. The EQUADIFF Conference 2024, 10 - 14 June 2024, Karlstad, Sweden: Abstracts. Karlstad University, P. 290-291. (Oral talk)
Atlasiuk O., Mikhailets V. ODE-systems with inhomogeneous boundary conditions containing high-order derivatives. The conference of young scientists ''Pidstryhach readings - 2024'', 27 - 29 May 2024, Lviv, Ukraine: Abstracts. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of the National Academy of Sciences of Ukraine, P. 1 - 2. (Oral talk)
Atlasiuk, O. The solvability of inhomogeneous boundary‑value problems in Sobolev spaces. Generalized Functions Online Workshop dedicated to the International Day for Women in Mathematics and the birthday of Maryam Mirzakhani, 10 May 2024, Online: Abstracts. Technische Universitat Wien, University of Novi Sad, University of Vienna, 4rd edition P. 1-2. (Oral talk)
On differential systems in Sobolev spaces with generic boundary conditions. Seminar in INSA de Lyon, Institut Camille Jordan, France, 14.12.2023 (Oral talk )
Atlasiuk, O. Approximation of solutions to generic boundary-value problems in Sobolev spaces. XIX International Scientific Mykhailo Kravchuk Conference, dedicated to the 125th anniversary of Igor Sikorsky Kyiv Polytechnic Institute, 11 - 12 October 2023, Kyiv, Ukraine: Abstracts. Igor Sikorsky Kyiv Polytechnic Institute, P. 14-15.
Atlasiuk, O. Approximation of solutions to generic boundary-value problems in Sobolev spaces. Conference on Trends in Analysis 2023, 4 - 6 October 2023, Duisburg, Germany: Abstracts. University of Duisburg-Essen, P. 14.
Atlasiuk, O.; Mikhailets, V. Approximation of solutions to generic boundary-value problems in Sobolev spaces. Workshop ''Complex Dynamical Systems: theory, mathematical modelling, computing and application'', 2 - 4 October 2023, Kyiv, Ukraine: Abstracts. Institute of Mathematics of the National Academy of Sciences of Ukraine, P. 1.
10th Heidelberg Laureate Forum 2023, Heidelberg, Germany, 24 -29 September 2023 (Poster) https://www.heidelberg-laureate-forum.org/forum/10th-hlf-2023/
Atlasiuk, O.; Mikhailets, V. On the Fredholm numbers of inhomogeneous boundary-value problems in Slobodecki spaces. International scientific conference ''Mathematics and Information Technologies'' dedicated to the 55th anniversary of the faculty mathematics and informatics, 28 - 30 September 2023, Chernivtsi, Ukraine: Abstracts. Yuri Fedkovich Chernivtsi National University, P. 1-2.
TRIeste: Topological Recursion and Integrability, Trieste, Italy, September 2023 (Listener)
Atlasiuk, O. Approximation of solutions to generic boundary-value problems in Sobolev spaces. International conference on spectral theory and approximation, 14 - 18 August 2023, Lund, Sweden: Abstracts. Lund University, P. 6.
School ''Numbers in the universe: latest advances in number theory and its applications'', Warsaw, Poland, July 2023 (Listener)
School ''Spectral theory and geometry of ergodic Schrodinger operators'', Potsdam, Germany, 31st of July - 4th of August 2023 (Poster)
https://www.uni-potsdam.de/en/spectral-summer2023/index
Conference ''Contemporary Analysis and Its Applications'' (CAIA 2023), Portoroz, Slovenia, June 2023 (Poster)
Atlasiuk, O. Solvability and continuity in a parameter of solutions of differential systems with generic boundary conditions. International Workshop on Functional Analysis and Quantum Physics: interplay, challenges, perspectives, 5 - 9 June 2023, Palermo, Italy: Abstracts. Universita degli Studi di Palermo, P. 3.
Atlasiuk, O. On solvability of generic boundary-value problems. International Conference of Young Mathematicians, 1-3 June 2023, Online: Abstracts. Institute of Mathematics of the National Academy of Sciences of Ukraine, P. 1-2.
Atlasiuk, O. On differential systems in Sobolev spaces with generic inhomogeneous boundary conditions. Generalized Functions Online Workshop dedicated to the International Day for Women in Mathematics and the birthday of Maryam Mirzakhani, 12 May 2023, Online: Abstracts. Technische Universitat Wien, University of Novi Sad, University of Vienna, 3rd edition, P. 5.
Atlasiuk O. On the solvability of inhomogeneous boundary-value problems in Sobolev spaces. 4th BYMAT (Bringing Young Mathematicians Together) Conference, 9 - 11 November 2022, Valencia, Spain: Abstracts. University of Valencia, P. 53.
Atlasiuk O. On linear ordinary differential systems with generic boundary conditions in Sobolev spaces. Czech Technical University, Faculty of Nuclear Physics. Seminar, 8 November 2022.
Atlasiuk O. Limit theorems for solutions to onedimensional boundary-value problems in Sobolev spaces. Conference ''Asymptotic analysis and spectral theory'', 26 - 30 September 2022, Oldenburg, Federal Republic of Germany: Abstracts. Carl von Ossietzky University of Oldenburg.
Atlasiuk O. On Linear Inhomogeneous Boundary-Value Problems for Differential Systems in Sobolev Spaces. The 9th Heidelberg Laureate Forum 2022, 18 - 23 September 2022, Heidelberg, Federal Republic of Germany: Poster.
Atlasiuk, O. Linear boundary-value problems for differential systems
with a parameter in Sobolev spaces. On the Trail of Women in Mathematics, 15 - 17 September 2022, Gdansk, Republic of Poland: Abstracts. Gdansk University of Technology, P. 20.
Atlasiuk O. Linear ordinary differential systems with generic boundary conditions in Sobolev spaces. IWOTA 2022, 6 - 10 September 2022, Krakow, Republic of Poland: Abstracts. Jagiellonian University, University of Agriculture, AGH University of Science and Technology, P. 1.
Atlasiuk O. On Linear Inhomogeneous Boundary-Value Problems for Differential Systems in Sobolev Spaces. European Women in Mathematics General Meeting 2022 (EWM GM 2022), 22 - 26 August 2022, Espoo, Finland: Poster. Aalto University.
Atlasiuk O. On limit theorems for the solutions to multipoint inhomogeneous boundary-value problems with parameters in Sobolev spaces. Conference ''Differential Geometry and its Applications'', 17 - 23 July 2022, Hradec Králové, Czech Republic: Abstracts. University of Hradec Králové, P. 50-51.
Summer School 2022, 14 July - 12 August 2022, Hradec Králové, Czech Republic, University of Hradec Králové.
Atlasiuk O. Linear ordinary differential systems with generic inhomogeneous boundary conditions in Sobolev spaces. Conference ''EQUADIFF 15'', 11 - 15 July 2022, Brno, Czech Republic: Abstracts. Masaryk University, P. 36.
Atlasiuk O. On Linear Inhomogeneous Boundary-Value Problems for Differential Systems in Sobolev Spaces. Third School and Workshop ''Mathematical Challenges in Quantum Mechanics'', 13 -- 18 June 2022, Como, Italy: Poster. University of Insubria.
Atlasiuk O. On solvability of one-dimensional boundary-value problems in Sobolev spaces. The seminar ''Current Problems in Numerical Analysis'' of the Institute of Mathematics of the Czech Academy of Sciences. Prague, Czech Republic, 10 June 2022.
Atlasiuk O. Linear boundary-value problems for ordinary differential systems with a parameter in Sobolev spaces. Interdisciplinary Conference on Multiple Scale Systems, Systems with Hysteresis and Fluid Mechanics ''MURPHYS 2022'', 29 May - 3 June 2022, Ostravice, Czech Republic: Abstracts. Mathematical Institute of Silesian University in Opava, P. 14.
Atlasiuk O. Linear ordinary differential systems with generic boundary conditions in Sobolev spaces. The conference of young scientists ''Pidstryhach readings - 2022'', 25 - 27 May 2022, Lviv, Ukraine: Abstracts. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of the National Academy of Sciences of Ukraine, 1 - 2.
Atlasiuk O. On solvability of inhomogeneous boundary-value problems in Sobolev spaces. XXXII Seminar in Differential Equations, 23-27 May 2022, Alfrédov, Czech Republic: Abstracts. The Union of Czech Mathematicians and Physicists, P. 1.
Atlasiuk O.M., Mikhailets V.A. One-dimensional Fredholm boundary-value problems with a parameter in Sobolev spaces. The international online conference ''Current trends in abstract and applied analysis'', 12-15 May 2022, Ivano-Frankivsk, Ukraine: Abstracts. Vasyl Stefanyk Precarpathian National University, P. 4.
Atlasiuk Îlena. On solvability of one-dimensional boundary-value problems in Sobolev spaces. Generalized Functions Online Workshop dedicated to the International Day for Women in Mathematics and the birthday of Maryam Mirzakhani, 12 May 2022, Online: Abstracts. Technische Universität Wien, University of Novi Sad, University of Vienna, 2nd edition, P. 2.
The talk ''On generic boundary-value problems for differential systems in Sobolev spaces'' at the seminar on Differential Equations and Integral Theory at the Evolution Differential Equations Department of the Institute of Mathematics of the Czech Academy of Sciences. Prague (Czech Republic), 24 March 2022.
Conference ''Rencontre Poisson'', University of La Rochelle, La Rochelle, France, 21 - 22 October 2021
Atlasiuk Îlena. On linear generic inhomogeneous boundary-value problems for differential systems in Sobolev spaces. Proceedings of the 3rd BYMAT Conference (Bringing Young Mathematicians Together), 28 August 2021, Valencia, Spain: Proceedings of the Conference. the Universitat de València and the Universitat Politècnica de València, Vol. 2, P. 171 - 174.
Atlasiuk Î. On generic boundary-value problems for differential systems in Sobolev spaces. NSF/CBMS Conference: Gaussian Random Fields, Fractals, SPDEs, and Extremes, 2 - 6 August 2021, Tuscaloosa, Alabama, United States: Abstracts. The University of Alabama in Huntsville, P. 8.
Atlasiuk Î. On generic boundary-value problems for differential systems in Sobolev spaces. Online Summer School on Geometry and Topology, 7 July - 6 August 2021, Hradec Králové, Czech Republic: Abstracts. University of Hradec Králové, P. 1.
Atlasiuk Î. On generic boundary-value problems for differential system. Integrable Systems in Geometry and Mathematical Physics, Conference in Memory of Boris Dubrovin (online), 28 June - 02 July 2021, Trieste, Italy: Abstracts. Scuola Internazionale Superiore di Studi Avanzati (SISSA), P. 8.
Atlasiuk Î. On linear inhomogeneous boundary-value problems for differential systems in Sobolev spaces. The 8th European Congress of Mathematics (8ECM), 20 - 26 June 2021, Portorož, Slovenia: Abstracts. University of Primorska, P. 628 -- 629.
Satellite conference of the 8th European Congress of Mathematics ''Contemporary Analysis and Its Applications'', 16 - 18 June 2021, Portorož, Slovenia.
Workshop MCQM21 ''Mathematical Challenges in Quantum Mechanics'', 14 - 15 June 2021, Como, Italy.
Atlasiuk Î. On linear generic boundary-value problems for differential systems in Sobolev spaces. International Conference of Young Mathematicians, 3 - 5 June 2021, Kyiv, Ukraine: Abstracts. Institute of Mathematics of NAS of Ukraine, P. 46.
Atlasiuk O., Mikhailets V. On solvability of Fredholm inhomogeneous boundary-value problems in Sobolev spaces. The conference of young scientists ''Pidstryhach readings - 2021'', 26 - 28 May 2021, Lviv, Ukraine: Abstracts. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of the National Academy of Sciences of Ukraine, P. 1 - 2.
Atlasiuk Î. Ì. One-dimensional Fredholm boundary-value problems with parameter. Seminar of young scientists of the Institute of Mathematics of the NAS of Ukraine, Kyiv, Ukraine, 22 February 2021.
Atlasiuk Îlena, Mikhailets Vladimir. On generic inhomogeneous boundary-value problems for differential systems in Sobolev spaces. International Workshop on the Qualitative Theory of Differential Equations ''QUALITDE - 2020'', 19 - 21 December 2020, Tbilisi, Georgia: Abstracts. A. Razmadze Mathematical Institute of I. Javakhishvili Tbilisi State University, P. 22 - 26.
Atlasiuk O. On linear generic inhomogeneous boundary-value problems for differential systems in Sobolev spaces. 3rd BYMAT (Bringing Young Mathematicians Together) Conference, 1 - 3 December 2020, Valencia, Spain: Abstracts. University of Valencia, P. 60.
Atlasiuk O., Mikhailets V. On generic inhomogeneous boundary-value problems in Sobolev spaces. XI International Skorobohatko Mathematical Conference, 26 - 30 October 2020, Lviv, Ukraine: Abstracts. National Academy of Sciences of Ukraine, Pidstryhach Institute for Applied Problems of Mechanics and Mathematics, P. 9.
Atlasiuk O., Mikhailets V. On limit theorems for solutions of multipoint boundary-value problems with parameter in Sobolev spaces. International scientific conference "Modern problems of Differential Equations and their application", dedicated to the 100th anniversary of Professor S.D. Eidelman, 16 - 19 September 2020, Chernivtsi, Ukraine: Abstracts. Institute of Mathematics of NAS of Ukraine, Yuriy Fedkovych Chernivtsi National University, P. 86 - 87.
Atlasiuk Î. Ì. One-dimensional Fredholm boundary-value problems with parameter. Common meeting of Departments Differential equations and oscillation theory, and Nonlinear analysis of the Institute of Mathematics of the NAS of Ukraine, Kyiv, Ukraine (meeting leaders: Academician of the NAS of Ukraine À. Ì. Samoilenko, Corresponding Member of the NAS of Ukraine À. N. Kochubei), 15 September 2020.
Atlasiuk O., Mikhailets V. On continuity in a parameter of solutions to inhomogeneous boundary-value problems in Sobolev spaces. The conference of young scientists ''Pidstryhach readings - 2020'', 26 - 28 May 2020, Lviv, Ukraine: Abstracts. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of the National Academy of Sciences of Ukraine, P. 1 -- 2.
Atlasiuk Î. Ì. On solvability of one-dimensional boundary-value problems in Sobolev spaces. International scientific and practical conference ''Shevchenkivska Vesna - 2020: Mathematics, statistics, mechanics. Applied mathematics, computer science, software engineering, system analysis'', 15 - 16 April 2020, Kyiv, Ukraine: Abstracts. Taras Shevchenko National University of Kyiv, P. 5 - 6.
Atlasiuk Î. Ì. On Fredholm boundary-value problems with a parameter in Sobolev spaces. Seminar ''Spectral and boundary-value problems'' of Laboratory of differential equations with partial derivatives of the Institute of Mathematics of the NAS of Ukraine, Kyiv, Ukraine (seminar leader: Professor V. À. Mikhailets), 11 February 2020.
Atlasiuk Î. Ì. On linear boundary-value problems for differential systems in Sobolev spaces. International Conference ''Supergeometry, Supersymmetry and Quantization'', 16 - 19 December 2019, Esch-sur-Alzette, Grand Duchy of Luxembourg. (poster session)
Atlasiuk Îlena, Mikhailets Vladimir. On linear boundary-value problems for differential systems in Sobolev spaces. International Workshop on the Qualitative Theory of Differential Equations ''QUALITDE - 2019'', 7 - 9 December 2019, Tbilisi, Georgia: Abstracts. A. Razmadze Mathematical Institute of I. Javakhishvili Tbilisi State University, P. 19 - 22.
Atlasiuk Î. Ì. On Fredholm one-dimensional boundary-value problems with parameter in Sobolev spaces. International conference ''Problems of Theoretical and Mathematical Physics'' dedicated to the 110th anniversary of M.M. Bogolyubov (1909 - 1992), 24 - 26 September 2019, Kyiv, Ukraine: Abstracts. Bogolyubov Institute for Theoretical Physics of NAS of Ukraine, Institute of Mathematics of NAS of Ukraine, P. 91.
Summer School ''Geometry and Topology'', 1 - 31 August 2019, Hradec Králové, Czech Republic, University of Hradec Králové.
Atlasiuk Î. Ì. On Fredholm one-dimensional boundary-value problems with parameter in Sobolev spaces. International Conference ''Functional Methods in Approximation Theory, Differential Equations and Numerical Mathematics IV'', dedicated to the 100th anniversary of V. K. Dzyadyk (1919 - 1998), 20 - 26 June 2019, Svityaz' village, Volyn' region, Ukraine: Abstracts. Institute of Mathematics of NAS of Ukraine, Taras Shevchenko National University of Kyiv, Lesya Ukrainka Eastern European National University, P. 70 - 71.
Atlasiuk Î. Ì. Limit theorems for solutions of multipoint boundary-value problems in Sobolev spaces. International Conference of Young Mathematicians, 6 - 8 June 2019, Kyiv, Ukraine: Abstracts. Institute of Mathematics of NAS of Ukraine, P. 49.
Atlasiuk Î. Ì. On Fredholm one-dimensional boundary-value problems in Sobolev spaces. International scientific conference ''Modern problems of mathematics and its application in natural sciences and information technologies'' dedicated to the 50th anniversary of the Faculty of Mathematics and Informatics, 17 - 19 September 2018, Chernivtsi, Ukraine: Abstracts. Yuriy Fedkovych Chernivtsi National University, P. 13.
Atlasiuk Î. Ì. On Fredholm one-dimensional boundary-value problems in Sobolev spaces. XIIIth Summer School ''Analysis, Topology and Applications'', 29 July - 11 August 2018, Vyzhnytsya town, Chernivtsi region, Ukraine: Abstracts. - Yuriy Fedkovych Chernivtsi National University, Ivan Franko National University of Lviv, P. 56.
Summer School ''Algebraic Geometry'', 3 August - 2 September 2018, Hradec Králové, Czech Republic, University of Hradec Králové.
Olena Atlasiuk. Generic inhomogeneous boundary-value problems in Sobolev spaces.The King's College London Analysis seminar, 2 October 2025. https://sites.google.com/view/kclanalysisseminar
Atlasiuk Î., Mikhailets V. Sobolev space aspects of differential equations. 12th International Skorobohatko Mathematical Conference, 23 - 25 September 2025, Lviv, Ukraine: Abstracts. Institute for Applied Problems of Mechanics and Mathematics, P. 6. http://www.iapmm.lviv.ua/conf_skorob2025/index.html (Oral talk)
Olena Atlasiuk, Convergence and approximation of solutions of inhomogeneous boundary-value problems in Sobolev spaces. Spectral Theory and Differential Operators, September 15-19, 2025, Graz, Austria, abstract, Graz University of Technology https://www.math.tugraz.at/diffop2025/index.html (Oral talk)
Olena Atlasiuk, Volodymyr Mikhailets. On differential systems in Sobolev spaces with generic inhomogeneous boundary conditions. International workshop on modern problems of analysis, optimization, approximation, and their applications, June 25-27, 2025, Roma, Italy, abstract, Uninettuno University https://sites.google.com/uninettunouniversity.net/iwmpaoata/home?authuser=0 (Oral talk)
Atlasiuk Îlena. On differential systems in Sobolev spaces with generic inhomogeneous boundary conditions. Recent advances in operator theory and its applications, June 3-6, 2025, Milan, Italy, abstract https:http://iapmm.lviv.ua/chyt2025/indexen.html (Oral talk) https://sites.google.com/view/qmp25-intensiveperiod/workshops/workshop-3-6-june?authuser=0
Atlasiuk Îlena. Approximation problem for generic boundary-value problems in Sobolev spaces. International Conference of Young Mathematicians, June 4-6, 2025, Kyiv, Ukraine, abstract https:http://iapmm.lviv.ua/chyt2025/indexen.html (Oral talk) https://www.imath.kiev.ua/~young/youngconf2025/index.php?module=4&lang=en
Atlasiuk Îlena. Generic boundary-value problems in Sobolev spaces with a parameter. THE CONFERENCE OF YOUNG SCIENTISTS «PIDSTRYHACH READINGS – 2025», May 27-29, 2025, Lviv, Ukraine, abstract https:http://iapmm.lviv.ua/chyt2025/indexen.html (Oral talk)
Atlasiuk Îlena, Volodymyr Mikhailets. ODE-systems with boundary inhomogeneous conditions containing higher-order derivatives. International Workshop within the framework of the HORIZON-2020 project SOMPATY, May 12-16, 2025, Kyiv, Ukraine, abstract (SOMPATY-2025) https://sites.google.com/view/sompaty-nasu-2025/work-program?authuser=0 (Oral talk)
Atlasiuk Îlena. 3 years abroad. Workshop of Ukrainian women mathematicians, 12 May 2025, Online. Institute of Mathematics of the National Academy of Sciences of Ukraine https://may12.womeninmaths.org/node/1417 (Oral talk)
Atlasiuk Îlena. On continuity in a parameter of solutions to generic boundary-value problems in Sobolev spaces. Generalized Functions Online Workshop dedicated to the International Day for Women in Mathematics and the birthday of Maryam Mirzakhani, 12 May 2025, Online: Abstracts. Technische Universität Wien, University of Novi Sad, University of Vienna, 5th edition, P. 2. https://sites.dmi.uns.ac.rs/gfws2025/ (Oral talk)
Atlasiuk O. ODE-systems with boundary conditions containing higher order derivatives. The International Centre for Mathematics in Ukraine (ICMU) Winter School "Random matrices, random analytic functions, and non-linear PDEs", 13-19 January 2025, the “Vodohray” resort, Chynadiyovo village, Zakarpattia, Ukraine. (Poster)
Mikhailets Vladimir, Atlasiuk Îlena. ODE-systems with boundary inhomogeneous conditions containing higherorder derivatives. International Workshop on the Qualitative Theory of Differential Equations ''QUALITDE - 2024'', 21 - 23 December 2024, Tbilisi, Georgia: Abstracts. Tbilisi: A. Razmadze Mathematical Institute of I. Javakhishvili Tbilisi State University, P. 204 - 208.
Atlasiuk O. ODE-systems with boundary conditions containing higher order derivatives. 11th International Conference on “Function Spaces, Differential Operators, and Nonlinear Analysis”, 22 - 28 September 2024, Oberhof, Germany: Abstracts. Friedrich Schiller University of Jena, 2024. (Oral talk)
Atlasiuk, O.; Mikhailets, V. ODE-systems with boundary conditions containing higher order derivatives. 9th European Congress of Mathematics, Seville, Spain: Abstracts (2024)
Meetings of the Society of European Women in Mathematics, July 14th 2024, Seville, Spain
Atlasiuk, O. Approximation of solutions to generic boundary-value problems in Sobolev spaces. Summer School on Current Topics in Mathematical Physics, Zurich, Switzerland: Abstracts (2024)
Atlasiuk O. ODE-systems with boundary conditions containing higher order derivatives. The EQUADIFF Conference 2024, 10 - 14 June 2024, Karlstad, Sweden: Abstracts. Karlstad University, P. 290-291. (Oral talk)
Atlasiuk O., Mikhailets V. ODE-systems with inhomogeneous boundary conditions containing high-order derivatives. The conference of young scientists ''Pidstryhach readings - 2024'', 27 - 29 May 2024, Lviv, Ukraine: Abstracts. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of the National Academy of Sciences of Ukraine, P. 1 - 2. (Oral talk)
Atlasiuk, O. The solvability of inhomogeneous boundary‑value problems in Sobolev spaces. Generalized Functions Online Workshop dedicated to the International Day for Women in Mathematics and the birthday of Maryam Mirzakhani, 10 May 2024, Online: Abstracts. Technische Universitat Wien, University of Novi Sad, University of Vienna, 4rd edition P. 1-2. (Oral talk)
On differential systems in Sobolev spaces with generic boundary conditions. Seminar in INSA de Lyon, Institut Camille Jordan, France, 14.12.2023 (Oral talk )
Atlasiuk, O. Approximation of solutions to generic boundary-value problems in Sobolev spaces. XIX International Scientific Mykhailo Kravchuk Conference, dedicated to the 125th anniversary of Igor Sikorsky Kyiv Polytechnic Institute, 11 - 12 October 2023, Kyiv, Ukraine: Abstracts. Igor Sikorsky Kyiv Polytechnic Institute, P. 14-15.
Atlasiuk, O. Approximation of solutions to generic boundary-value problems in Sobolev spaces. Conference on Trends in Analysis 2023, 4 - 6 October 2023, Duisburg, Germany: Abstracts. University of Duisburg-Essen, P. 14.
Atlasiuk, O.; Mikhailets, V. Approximation of solutions to generic boundary-value problems in Sobolev spaces. Workshop ''Complex Dynamical Systems: theory, mathematical modelling, computing and application'', 2 - 4 October 2023, Kyiv, Ukraine: Abstracts. Institute of Mathematics of the National Academy of Sciences of Ukraine, P. 1.
10th Heidelberg Laureate Forum 2023, Heidelberg, Germany, 24 -29 September 2023 (Poster) https://www.heidelberg-laureate-forum.org/forum/10th-hlf-2023/
Atlasiuk, O.; Mikhailets, V. On the Fredholm numbers of inhomogeneous boundary-value problems in Slobodecki spaces. International scientific conference ''Mathematics and Information Technologies'' dedicated to the 55th anniversary of the faculty mathematics and informatics, 28 - 30 September 2023, Chernivtsi, Ukraine: Abstracts. Yuri Fedkovich Chernivtsi National University, P. 1-2.
TRIeste: Topological Recursion and Integrability, Trieste, Italy, September 2023 (Listener)
Atlasiuk, O. Approximation of solutions to generic boundary-value problems in Sobolev spaces. International conference on spectral theory and approximation, 14 - 18 August 2023, Lund, Sweden: Abstracts. Lund University, P. 6.
School ''Numbers in the universe: latest advances in number theory and its applications'', Warsaw, Poland, July 2023 (Listener)
School ''Spectral theory and geometry of ergodic Schrodinger operators'', Potsdam, Germany, 31st of July - 4th of August 2023 (Poster)
https://www.uni-potsdam.de/en/spectral-summer2023/index
Conference ''Contemporary Analysis and Its Applications'' (CAIA 2023), Portoroz, Slovenia, June 2023 (Poster)
Atlasiuk, O. Solvability and continuity in a parameter of solutions of differential systems with generic boundary conditions. International Workshop on Functional Analysis and Quantum Physics: interplay, challenges, perspectives, 5 - 9 June 2023, Palermo, Italy: Abstracts. Universita degli Studi di Palermo, P. 3.
Atlasiuk, O. On solvability of generic boundary-value problems. International Conference of Young Mathematicians, 1-3 June 2023, Online: Abstracts. Institute of Mathematics of the National Academy of Sciences of Ukraine, P. 1-2.
Atlasiuk, O. On differential systems in Sobolev spaces with generic inhomogeneous boundary conditions. Generalized Functions Online Workshop dedicated to the International Day for Women in Mathematics and the birthday of Maryam Mirzakhani, 12 May 2023, Online: Abstracts. Technische Universitat Wien, University of Novi Sad, University of Vienna, 3rd edition, P. 5.
Atlasiuk O. On the solvability of inhomogeneous boundary-value problems in Sobolev spaces. 4th BYMAT (Bringing Young Mathematicians Together) Conference, 9 - 11 November 2022, Valencia, Spain: Abstracts. University of Valencia, P. 53.
Atlasiuk O. On linear ordinary differential systems with generic boundary conditions in Sobolev spaces. Czech Technical University, Faculty of Nuclear Physics. Seminar, 8 November 2022.
Atlasiuk O. Limit theorems for solutions to onedimensional boundary-value problems in Sobolev spaces. Conference ''Asymptotic analysis and spectral theory'', 26 - 30 September 2022, Oldenburg, Federal Republic of Germany: Abstracts. Carl von Ossietzky University of Oldenburg.
Atlasiuk O. On Linear Inhomogeneous Boundary-Value Problems for Differential Systems in Sobolev Spaces. The 9th Heidelberg Laureate Forum 2022, 18 - 23 September 2022, Heidelberg, Federal Republic of Germany: Poster.
Atlasiuk, O. Linear boundary-value problems for differential systems
with a parameter in Sobolev spaces. On the Trail of Women in Mathematics, 15 - 17 September 2022, Gdansk, Republic of Poland: Abstracts. Gdansk University of Technology, P. 20.
Atlasiuk O. Linear ordinary differential systems with generic boundary conditions in Sobolev spaces. IWOTA 2022, 6 - 10 September 2022, Krakow, Republic of Poland: Abstracts. Jagiellonian University, University of Agriculture, AGH University of Science and Technology, P. 1.
Atlasiuk O. On Linear Inhomogeneous Boundary-Value Problems for Differential Systems in Sobolev Spaces. European Women in Mathematics General Meeting 2022 (EWM GM 2022), 22 - 26 August 2022, Espoo, Finland: Poster. Aalto University.
Atlasiuk O. On limit theorems for the solutions to multipoint inhomogeneous boundary-value problems with parameters in Sobolev spaces. Conference ''Differential Geometry and its Applications'', 17 - 23 July 2022, Hradec Králové, Czech Republic: Abstracts. University of Hradec Králové, P. 50-51.
Summer School 2022, 14 July - 12 August 2022, Hradec Králové, Czech Republic, University of Hradec Králové.
Atlasiuk O. Linear ordinary differential systems with generic inhomogeneous boundary conditions in Sobolev spaces. Conference ''EQUADIFF 15'', 11 - 15 July 2022, Brno, Czech Republic: Abstracts. Masaryk University, P. 36.
Atlasiuk O. On Linear Inhomogeneous Boundary-Value Problems for Differential Systems in Sobolev Spaces. Third School and Workshop ''Mathematical Challenges in Quantum Mechanics'', 13 -- 18 June 2022, Como, Italy: Poster. University of Insubria.
Atlasiuk O. On solvability of one-dimensional boundary-value problems in Sobolev spaces. The seminar ''Current Problems in Numerical Analysis'' of the Institute of Mathematics of the Czech Academy of Sciences. Prague, Czech Republic, 10 June 2022.
Atlasiuk O. Linear boundary-value problems for ordinary differential systems with a parameter in Sobolev spaces. Interdisciplinary Conference on Multiple Scale Systems, Systems with Hysteresis and Fluid Mechanics ''MURPHYS 2022'', 29 May - 3 June 2022, Ostravice, Czech Republic: Abstracts. Mathematical Institute of Silesian University in Opava, P. 14.
Atlasiuk O. Linear ordinary differential systems with generic boundary conditions in Sobolev spaces. The conference of young scientists ''Pidstryhach readings - 2022'', 25 - 27 May 2022, Lviv, Ukraine: Abstracts. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of the National Academy of Sciences of Ukraine, 1 - 2.
Atlasiuk O. On solvability of inhomogeneous boundary-value problems in Sobolev spaces. XXXII Seminar in Differential Equations, 23-27 May 2022, Alfrédov, Czech Republic: Abstracts. The Union of Czech Mathematicians and Physicists, P. 1.
Atlasiuk O.M., Mikhailets V.A. One-dimensional Fredholm boundary-value problems with a parameter in Sobolev spaces. The international online conference ''Current trends in abstract and applied analysis'', 12-15 May 2022, Ivano-Frankivsk, Ukraine: Abstracts. Vasyl Stefanyk Precarpathian National University, P. 4.
Atlasiuk Îlena. On solvability of one-dimensional boundary-value problems in Sobolev spaces. Generalized Functions Online Workshop dedicated to the International Day for Women in Mathematics and the birthday of Maryam Mirzakhani, 12 May 2022, Online: Abstracts. Technische Universität Wien, University of Novi Sad, University of Vienna, 2nd edition, P. 2.
The talk ''On generic boundary-value problems for differential systems in Sobolev spaces'' at the seminar on Differential Equations and Integral Theory at the Evolution Differential Equations Department of the Institute of Mathematics of the Czech Academy of Sciences. Prague (Czech Republic), 24 March 2022.
Conference ''Rencontre Poisson'', University of La Rochelle, La Rochelle, France, 21 - 22 October 2021
Atlasiuk Îlena. On linear generic inhomogeneous boundary-value problems for differential systems in Sobolev spaces. Proceedings of the 3rd BYMAT Conference (Bringing Young Mathematicians Together), 28 August 2021, Valencia, Spain: Proceedings of the Conference. the Universitat de València and the Universitat Politècnica de València, Vol. 2, P. 171 - 174.
Atlasiuk Î. On generic boundary-value problems for differential systems in Sobolev spaces. NSF/CBMS Conference: Gaussian Random Fields, Fractals, SPDEs, and Extremes, 2 - 6 August 2021, Tuscaloosa, Alabama, United States: Abstracts. The University of Alabama in Huntsville, P. 8.
Atlasiuk Î. On generic boundary-value problems for differential systems in Sobolev spaces. Online Summer School on Geometry and Topology, 7 July - 6 August 2021, Hradec Králové, Czech Republic: Abstracts. University of Hradec Králové, P. 1.
Atlasiuk Î. On generic boundary-value problems for differential system. Integrable Systems in Geometry and Mathematical Physics, Conference in Memory of Boris Dubrovin (online), 28 June - 02 July 2021, Trieste, Italy: Abstracts. Scuola Internazionale Superiore di Studi Avanzati (SISSA), P. 8.
Atlasiuk Î. On linear inhomogeneous boundary-value problems for differential systems in Sobolev spaces. The 8th European Congress of Mathematics (8ECM), 20 - 26 June 2021, Portorož, Slovenia: Abstracts. University of Primorska, P. 628 -- 629.
Satellite conference of the 8th European Congress of Mathematics ''Contemporary Analysis and Its Applications'', 16 - 18 June 2021, Portorož, Slovenia.
Workshop MCQM21 ''Mathematical Challenges in Quantum Mechanics'', 14 - 15 June 2021, Como, Italy.
Atlasiuk Î. On linear generic boundary-value problems for differential systems in Sobolev spaces. International Conference of Young Mathematicians, 3 - 5 June 2021, Kyiv, Ukraine: Abstracts. Institute of Mathematics of NAS of Ukraine, P. 46.
Atlasiuk O., Mikhailets V. On solvability of Fredholm inhomogeneous boundary-value problems in Sobolev spaces. The conference of young scientists ''Pidstryhach readings - 2021'', 26 - 28 May 2021, Lviv, Ukraine: Abstracts. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of the National Academy of Sciences of Ukraine, P. 1 - 2.
Atlasiuk Î. Ì. One-dimensional Fredholm boundary-value problems with parameter. Seminar of young scientists of the Institute of Mathematics of the NAS of Ukraine, Kyiv, Ukraine, 22 February 2021.
Atlasiuk Îlena, Mikhailets Vladimir. On generic inhomogeneous boundary-value problems for differential systems in Sobolev spaces. International Workshop on the Qualitative Theory of Differential Equations ''QUALITDE - 2020'', 19 - 21 December 2020, Tbilisi, Georgia: Abstracts. A. Razmadze Mathematical Institute of I. Javakhishvili Tbilisi State University, P. 22 - 26.
Atlasiuk O. On linear generic inhomogeneous boundary-value problems for differential systems in Sobolev spaces. 3rd BYMAT (Bringing Young Mathematicians Together) Conference, 1 - 3 December 2020, Valencia, Spain: Abstracts. University of Valencia, P. 60.
Atlasiuk O., Mikhailets V. On generic inhomogeneous boundary-value problems in Sobolev spaces. XI International Skorobohatko Mathematical Conference, 26 - 30 October 2020, Lviv, Ukraine: Abstracts. National Academy of Sciences of Ukraine, Pidstryhach Institute for Applied Problems of Mechanics and Mathematics, P. 9.
Atlasiuk O., Mikhailets V. On limit theorems for solutions of multipoint boundary-value problems with parameter in Sobolev spaces. International scientific conference "Modern problems of Differential Equations and their application", dedicated to the 100th anniversary of Professor S.D. Eidelman, 16 - 19 September 2020, Chernivtsi, Ukraine: Abstracts. Institute of Mathematics of NAS of Ukraine, Yuriy Fedkovych Chernivtsi National University, P. 86 - 87.
Atlasiuk Î. Ì. One-dimensional Fredholm boundary-value problems with parameter. Common meeting of Departments Differential equations and oscillation theory, and Nonlinear analysis of the Institute of Mathematics of the NAS of Ukraine, Kyiv, Ukraine (meeting leaders: Academician of the NAS of Ukraine À. Ì. Samoilenko, Corresponding Member of the NAS of Ukraine À. N. Kochubei), 15 September 2020.
Atlasiuk O., Mikhailets V. On continuity in a parameter of solutions to inhomogeneous boundary-value problems in Sobolev spaces. The conference of young scientists ''Pidstryhach readings - 2020'', 26 - 28 May 2020, Lviv, Ukraine: Abstracts. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics of the National Academy of Sciences of Ukraine, P. 1 -- 2.
Atlasiuk Î. Ì. On solvability of one-dimensional boundary-value problems in Sobolev spaces. International scientific and practical conference ''Shevchenkivska Vesna - 2020: Mathematics, statistics, mechanics. Applied mathematics, computer science, software engineering, system analysis'', 15 - 16 April 2020, Kyiv, Ukraine: Abstracts. Taras Shevchenko National University of Kyiv, P. 5 - 6.
Atlasiuk Î. Ì. On Fredholm boundary-value problems with a parameter in Sobolev spaces. Seminar ''Spectral and boundary-value problems'' of Laboratory of differential equations with partial derivatives of the Institute of Mathematics of the NAS of Ukraine, Kyiv, Ukraine (seminar leader: Professor V. À. Mikhailets), 11 February 2020.
Atlasiuk Î. Ì. On linear boundary-value problems for differential systems in Sobolev spaces. International Conference ''Supergeometry, Supersymmetry and Quantization'', 16 - 19 December 2019, Esch-sur-Alzette, Grand Duchy of Luxembourg. (poster session)
Atlasiuk Îlena, Mikhailets Vladimir. On linear boundary-value problems for differential systems in Sobolev spaces. International Workshop on the Qualitative Theory of Differential Equations ''QUALITDE - 2019'', 7 - 9 December 2019, Tbilisi, Georgia: Abstracts. A. Razmadze Mathematical Institute of I. Javakhishvili Tbilisi State University, P. 19 - 22.
Atlasiuk Î. Ì. On Fredholm one-dimensional boundary-value problems with parameter in Sobolev spaces. International conference ''Problems of Theoretical and Mathematical Physics'' dedicated to the 110th anniversary of M.M. Bogolyubov (1909 - 1992), 24 - 26 September 2019, Kyiv, Ukraine: Abstracts. Bogolyubov Institute for Theoretical Physics of NAS of Ukraine, Institute of Mathematics of NAS of Ukraine, P. 91.
Summer School ''Geometry and Topology'', 1 - 31 August 2019, Hradec Králové, Czech Republic, University of Hradec Králové.
Atlasiuk Î. Ì. On Fredholm one-dimensional boundary-value problems with parameter in Sobolev spaces. International Conference ''Functional Methods in Approximation Theory, Differential Equations and Numerical Mathematics IV'', dedicated to the 100th anniversary of V. K. Dzyadyk (1919 - 1998), 20 - 26 June 2019, Svityaz' village, Volyn' region, Ukraine: Abstracts. Institute of Mathematics of NAS of Ukraine, Taras Shevchenko National University of Kyiv, Lesya Ukrainka Eastern European National University, P. 70 - 71.
Atlasiuk Î. Ì. Limit theorems for solutions of multipoint boundary-value problems in Sobolev spaces. International Conference of Young Mathematicians, 6 - 8 June 2019, Kyiv, Ukraine: Abstracts. Institute of Mathematics of NAS of Ukraine, P. 49.
Atlasiuk Î. Ì. On Fredholm one-dimensional boundary-value problems in Sobolev spaces. International scientific conference ''Modern problems of mathematics and its application in natural sciences and information technologies'' dedicated to the 50th anniversary of the Faculty of Mathematics and Informatics, 17 - 19 September 2018, Chernivtsi, Ukraine: Abstracts. Yuriy Fedkovych Chernivtsi National University, P. 13.
Atlasiuk Î. Ì. On Fredholm one-dimensional boundary-value problems in Sobolev spaces. XIIIth Summer School ''Analysis, Topology and Applications'', 29 July - 11 August 2018, Vyzhnytsya town, Chernivtsi region, Ukraine: Abstracts. - Yuriy Fedkovych Chernivtsi National University, Ivan Franko National University of Lviv, P. 56.
Summer School ''Algebraic Geometry'', 3 August - 2 September 2018, Hradec Králové, Czech Republic, University of Hradec Králové.
Miscellaneous
SCIENTIFIC RESEARCH PROJECTS
2025, Isaac Newton Institute for Mathematical Sciences "Solidarity Satellite Programme" and the London Mathematical Society "Solidarity Welcome Grant", a main executor
2024-2025, "ODE systems with boundary conditions containing higher order derivatives", Grant of the Academy of Finland: Mobility of researchers to Finland, a main executor
2023-2024, "Mathematical investigation of hysteresis in material modeling", European Union Strategy for the Danube Region, member
2022-2023, "Boundary-value problems and impulse perturbations of nonlinear evolutionary equations in infinite-dimensional spaces", Research project of joint teams of scientists of Taras Shevchenko Kyiv National University and the National Academy of Sciences of Ukraine, 3M-2022, member
2021-2022, "Analysis of boundary-value problems in models of natural sciences", Research work of young scientists of the National Academy of Sciences of Ukraine, 0121U111949, member
AWARDS & EXCELLENCE
2025, Shevchenko Scientific Society Fellowships 2025, USA
2025, State Scholarship named after Yurii Popravka to the best young scientists to perpetuate the events of the Revolution of Dignity and honor the feat of the heroes of Ukraine - the Heroes of the Heavenly Hundred for 2025 (Order No. 1639 of 11/20/2024)
2024, Talents for Ukraine Grant, Kyiv School of Economics
2023, Award of the Parliament of Ukraine to young scientists for 2022
2023, Thanks from the Mayor of Kyiv for the special achievements of the youth in the development of the capital of Ukraine
2022, Neuron IOCB Tech Endowment Fund grant for young Ukrainian scientists, Czech Republic
2021-2022, Scholarship of the NAS of Ukraine for young scientists
MEMBERSHIP AND PUBLIC ACTIVITIES
From September 2025 to the present, the Finnish Mathematical Society, a member
From November 2024 to the present, the London Mathematical Society, a member
From 2024 to the present, the European Mathematical Society, a member
From 2023 to the present, the European Mathematical Society Young Academy, a communication officer
From 2023 to the present, the Kyiv Mathematical Society, a member
From 2023 to the present, the Council of Young Scientists of the NAS of Ukraine, a member
From 2022 to the present, the European Women in Mathematics, a coordinator
From 2021 to the present, the Council of Young Scientists, Department of Mathematics of the NAS of Ukraine, a secretary
2019-2022, the Council of Young Scientists, Institute of Mathematics of the NAS of Ukraine, a member
2025, Isaac Newton Institute for Mathematical Sciences "Solidarity Satellite Programme" and the London Mathematical Society "Solidarity Welcome Grant", a main executor
2024-2025, "ODE systems with boundary conditions containing higher order derivatives", Grant of the Academy of Finland: Mobility of researchers to Finland, a main executor
2023-2024, "Mathematical investigation of hysteresis in material modeling", European Union Strategy for the Danube Region, member
2022-2023, "Boundary-value problems and impulse perturbations of nonlinear evolutionary equations in infinite-dimensional spaces", Research project of joint teams of scientists of Taras Shevchenko Kyiv National University and the National Academy of Sciences of Ukraine, 3M-2022, member
2021-2022, "Analysis of boundary-value problems in models of natural sciences", Research work of young scientists of the National Academy of Sciences of Ukraine, 0121U111949, member
AWARDS & EXCELLENCE
2025, Shevchenko Scientific Society Fellowships 2025, USA
2025, State Scholarship named after Yurii Popravka to the best young scientists to perpetuate the events of the Revolution of Dignity and honor the feat of the heroes of Ukraine - the Heroes of the Heavenly Hundred for 2025 (Order No. 1639 of 11/20/2024)
2024, Talents for Ukraine Grant, Kyiv School of Economics
2023, Award of the Parliament of Ukraine to young scientists for 2022
2023, Thanks from the Mayor of Kyiv for the special achievements of the youth in the development of the capital of Ukraine
2022, Neuron IOCB Tech Endowment Fund grant for young Ukrainian scientists, Czech Republic
2021-2022, Scholarship of the NAS of Ukraine for young scientists
MEMBERSHIP AND PUBLIC ACTIVITIES
From September 2025 to the present, the Finnish Mathematical Society, a member
From November 2024 to the present, the London Mathematical Society, a member
From 2024 to the present, the European Mathematical Society, a member
From 2023 to the present, the European Mathematical Society Young Academy, a communication officer
From 2023 to the present, the Kyiv Mathematical Society, a member
From 2023 to the present, the Council of Young Scientists of the NAS of Ukraine, a member
From 2022 to the present, the European Women in Mathematics, a coordinator
From 2021 to the present, the Council of Young Scientists, Department of Mathematics of the NAS of Ukraine, a secretary
2019-2022, the Council of Young Scientists, Institute of Mathematics of the NAS of Ukraine, a member