Department of Complex Analysis and Potential Theory

Mariia Stefanchuk

Candidate of Physical and Mathematical Sciences

Junior Research Fellow, Institute of Mathematics
of the National Academy of Sciences of Ukraine

  • 2016 - now - Junior Research Fellow, Institute of Mathematics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine.
  • 2013 - 2016 - Postgraduate student, Institute of Mathematics of the National Academy of Sciences of Ukraine, Kyiv, Ukraine.
  • Convex analysis
  • Complex analysis
  • Hypercomplex analysis
  • 2013 - 2016 - Degree of Candidate of Physical and Mathematical Sciences, Institute of Mathematics of National Academy of Sciences of Ukraine, Kyiv, Ukraine.
  • 2012 - 2013 - Master's degree in Mathematics, Volodymyr Hnatyuk Ternopil National Pedagogical University, Ternopil, Ukraine.
  • 2008 - 2012 - Bachelor's degree in Mathematics, Volodymyr Hnatyuk Ternopil National Pedagogical University, Ternopil, Ukraine.
  • 2021 - Salimov R.R, Stefanchuk M.V., Logarithmic asymptotics of the nonlinear Cauchy – Riemann – Beltrami equation, Ukrainian Mathematical Journal. – 2021. – Vol. 73, 3. – P. 395 – 407. (in Ukrainian)
  • 2020 - Salimov R.R, Stefanchuk M.V., On one extremal problem for nonlinear Cauchy–Riemann–Beltrami systems, Proceedings of IAMM of NASU. – 2020. – Vol. 34. – P. 109 – 115. (in Ukrainian)
  • 2020 - Salimov R.R, Stefanchuk M.V., On the local properties of solutions of the nonlinear Beltrami equation, Ukrainian Mathematical Bulletin. – 2020. – Vol. 17, 1. – P. 77 — 94. (in Ukrainian) (In English: R. R. Salimov, M. V. Stefanchuk , On the local properties of solutions of the nonlinear Beltrami equation, J. Math. Sci. – 2020. – Vol. 248. – P. 203 – 216.)
  • 2019 - Golberg A., Salimov R., Stefanchuk M. , Asymptotic Dilation of Regular Homeomorphisms, Complex Analysis and Operator Theory, September 2019, Volume 13, Issue 6, pp. 2813 - 2827. (first published online August 23, 2018)
  • 2019 - Klishchuk B.A., Salimov R.R, Stefanchuk M.V. , Asymptotics of solutions of nonlinear Beltrami equations, Dopov. Nac. akad. nauk Ukr. - 2019. - 2. - pp. 17 - 22. (in Russian)
  • 2018 - Stefanchuk M. V., Generalization of the concept of convexity in a hypercomplex space, Bulletin de la societe des sciences et des lettres de Lodz. - 2018, Vol. LXVIII, 2. - pp. 85 - 94.
  • 2017 - Stefanchuk M. V., Properties of conjugate functions in a hypercomplex space, Proceedings of the International Geometry Center. - 2017. - Vol. 10, 2. - pp. 39 - 46. (in Ukrainian)
  • 2016 - Stefanchuk M. V., Extremal elements in a hypercomplex space , Dopov. Nac. akad. nauk Ukr. - 2016. - 4. - pp. 13 - 19. (in Ukrainian)
  • 2016 - Zelinskii Yu. B., Stefanchuk M. V., Generalizations of the shadow problem, Ukr. Mat. Zh. - 2016. - 68, 6. - pp. 757 - 763. (in Ukrainian)
  • 2015 - Zelinskii Yu. B., Vyhovs'ka I. Yu., Stefanchuk M. V., Generalized convex sets and the problem of shadow, Ukr. Mat. Zh. - 2015. - 67, 12. - pp. 1658 - 1666. (in Russian)
  • 2015 - Zelinskii Yu. B., Vyhovs'ka I. Yu., Stefanchuk M. V., Shadow's problem, Dopov. Nac. akad. nauk Ukr. - 2015. - 5. - pp. 15 - 20. (in Russian)
  • 2017 - Stefanchuk M. V., Generalized convex sets and their applications, Proceedings of the Institute of Mathematics of NAS of Ukraine. - 2017. - 14, 1. - pp. 249 - 261. (in Ukrainian)
  • 2015 - Stefanchuk M. V., Tkachuk M. V., The set of measure zero, that contains spheres of all radiuses, Proceedings of the Institute of Mathematics of NAS of Ukraine. - 2015. - 12, 4. - pp. 285 - 289. (in Ukrainian)
  • 2015 - Stefanchuk M. V., Tkachuk M. V., Linear convex and conjugate functions in a hypercomplex space, Proceedings of the Institute of Mathematics of NAS of Ukraine. - 2015. - 12, 3. - pp. 225 - 235. (in Ukrainian)
  • 2021 - On the local behavior of the nonlinear Cauchy-Riemann-Beltrami system, International Conference of Young Mathematicians, June 3 – 5, 2021, Kyiv, Ukraine.
  • 2021 - Local behavior of regular solutions of the nonlinear Beltrami equation, Conference of young scientists "Prystrygachiv readings - 2021", May 26 – 28, 2021, Lviv.
  • 2020 - Some generalizations of the problem about the shadow, Conference of young scientists "Prystrygachiv readings - 2020", May 26 – 28, 2020, Lviv..
  • 2020 - On the local properties of solutions of nonlinear Beltrami equations, All-Ukrainian scientific conference "Modern problems in Probability Theory and Mathematical Analysis - 2020", February 26 – March 1, 2020, Vorohta.
  • 2019 - Logarithmic asymptotics for solutions of nonlinear Beltrami equations, International Conference of Young Mathematicians, June 6 - 8, 2019, Kyiv, Ukraine.
  • 2019 - Linearly convex and conjugate functions in a hypercomplex spase, Final AMMODIT Conference "Mathematics for Life Sciences", March 18 - 22, 2019, Kyiv, Ukraine.
  • 2019 - Asymptotic behavior of solutions of nonlinear Beltrami equations, All-Ukrainian scientific conference "Modern problems in Probability Theory and Mathematical Analysis - 2019", February 25 - March 1, 2019, Vorohta.
  • 2018 - Logarithmic asymptotics for solutions of nonlinear Beltrami equations, 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, September 17 - 19, 2018, Chernivtsi, Ukraine.
  • 2018 - An analog of the Schwarz lemma for regular homeomorphisms, The 13th Summer School Analysis, Topology and Applications, July 19 - August 11, 2018, Vyzhnytsya, Chernivtsi Region, Ukraine.
  • 2018 - Asymptotic behavior of solutions to a nonlinear Beltrami eqution, International scientific Conference "Algebraic and geometric methods of analysis", May 30 - June 4, 2018, Odesa, Ukraine.
  • 2018 - The shadow problem and its generalization, 4th Ammodit Conference, March 19 - 23, 2018, Malekhiv (Lviv region), Ukraine.
  • 2018 - Lipschitz analogue of the Ikoma-Schwartz lemma, All-Ukrainian scientific conference "Modern problems in Probability Theory and Mathematical Analysis", February 27 - March 2, 2018, Vorohta.
  • 2017 - Linearly convex functions in a hypercomplex space, The International Conference in Functional Analysis dedicated to the 125th anniversary of Stefan Banach, 18 - 23 September, 2017, Lviv.
  • 2017 - m-convex sets and the shadow problem, XII-th Summer School "Algebra, Topology, Analysis", July 10 - 23, 2017, Kolochava village, Zakarpatian district, Ukraine.
  • 2017 - h-hull and h-extremal elements of the set in a space H^n, International Conference of Young Mathematicians, June 7 - 10, 2017, Kyiv.
  • 2017 - Properties of conjugate functions in a hypercomplex space, International scientific conference "Algebraic and geometric methods of analysis", May 31 - June 5, 2017, Odesa, Ukraine.
  • 2017 - THE SETS OF MEASURE ZERO CONTAINING ANY QUANTITY OF SETS OF DEFINITE CLASS , THE CONFERENCE OF YOUNG SCIENTISTS "PIDSTRYHACH READINGS - 2017", May 23 - 25, 2017, Lviv.
  • 2017 - Generalization of the concept of convexity in a hypercomplex space, XV International Scientific - Practical Conference of Students, Postgraduates and Young Scientists "Shevchenkivska Vesna - 2017", April 4 - 6, 2017, Kyiv.
  • 2017 - Generalized convex sets and functions, All-Ukrainian scientific conference "Modern problems in Probability Theory and Mathematical Analysis", February 22 - 25, 2017, Vorohta.
  • 2016 - Properties of linearly convex and conjugate functions in a hypercomplex space, XI-th Summer School "Algebra, Topology, Analysis", August 1 - 14, 2016, Odesa.
  • 2016 - Generalization of the shadow problem for the family of sets, International Conference "Geometry and topology in Odessa - 2016", June 2 - 8, 2016, Odesa.
  • 2016 - Hypercomplex hulls and extreme elements in hypercomplex space, International Conference "Complex analysis and related topics", May 30 - June 4, 2016, Lviv.
  • 2016 - Some generalizations of the shadow problem, XIV International Scientific - Practical Conference of Students, Postgraduates and Young Scientists "Shevchenkivska Vesna - 2016", April 6 - 8, 2016, Kyiv.
  • 2016 - Extremal elements and H-quasiconvex sets in a space H^n, All-Ukrainian scientific conference "Modern problems in Probability Theory and Mathematical Analysis", February 24 - 27, 2016, Vorohta.
  • 2015 - Generalized convex sets and shadow's problem, X-th Summer School "Algebra, Topology, Analysis", August 3 - 15, 2015, Odesa.
  • 2015 - The set of measure zero, that contains spheres of all radiuses, Scientific Conference dedicated to the 100th anniversary of K. M. Fishman, July 1 - 4, 2015, Chernivtsi.
  • 2015 - Shadow's problem for the spheres, International Conference of Young Mathematicians, June 3 - 6, 2015, Kyiv.
  • 2015 - Linearly convex and conjugate functions in a hypercomplex space, XIII International Scientific - Practical Conference of Students, Postgraduates and Young Scientists "Shevchenkivska Vesna - 2015", April 1 - 3, 2015, Kyiv.
  • 2015 - Shadow's problem and related issues, All-Ukrainian scientific conference "Modern problems in Probability Theory and Mathematical Analysis", February 25 - March 1, 2015, Vorohta.
  • 2021 - Ya. S. Pidstryhach Award for young scientists 2021.
  • 2018 - Grant of the President of Ukraine to support scientific research of young scientists 2018.
  • Ukrainian - native language
  • Russian - near native language
  • English - Pre-Intermediate
  • German - Intermediate