Information on the author

Roman Ivanovych Petryshyn

Member of the Editorial Board of the journal Nonlinear Oscillations

Anatolii Mykhailovych Samoilenko (on his 80th birthday): A. A. Boichuk, W. L. Kułyk, I. O. Parasyuk, M. O. Perestyuk, R. I. Petryshyn, G. P. Pelyukh, M. Rontó, O. M. Stanzhitskyi, Y. V. Teplinsky, V. I. Tkachenko, S. I. Trofimchuk, and S. M. Chuiko; Volume 21, No.1, pp. 3-5; Link PDF
Of blessed memory of a prominent mathematician, Anatolii Mykhailovych Samoilenko (02.01.1938 – 04.12.2020): A. A. Boichuk, W. L. Kułyk, I. O. Lukovsky, V. L. Makarov, I. O. Parasyuk, G. P. Pelyukh, M. O. Perestyuk, R. I. Petryshyn, A. K. Prykarpatski, A. N. Ronto, M. Rontó, V. H. Samoilenko, O. M. Stanzhitskyi, Y. V. Teplinsky, O. M. Tymokha, V. I. Tkachenko, S. I. Trofimchuk, and S. M. Chuiko; Volume 26, No.1, pp. 3-5; Link PDF
A Cauchy problem for autonomous quasilinear parabolic pseudo- differential equations with argument deviation: Y. M. Drin and R. I. Petryshyn; Volume 16, No.1, pp. 29-37; Link PDF
The averaging method of solving boundary-value problems for differential equation systems with slow and fast variables: R. I. Petryshyn and Y. R. Petryshin; Volume 1, No.1, pp. 51-65; Link PDF
A substantiation of the averaging method for multifrequence system with an impulsive effect: R. I. Petryshyn and P. M. Dudnytskyi; Volume 8, No.1, pp. 61-79; Link PDF
Averaging the initial value and the boundary-value problems for one class of oscillating impulsive systems: R. I. Petryshyn and T. M. Sopronyuk; Volume 9, No.1, pp. 68-84; Link PDF
Properties of a matriciant of a linear system with impulsive effects occurring at fixed times: R. I. Petryshyn and T. M. Sopronyuk; Volume 14, No.1, pp. 85-92; Link PDF
Nonlocal time multipoint nonlocal problem for a certain class of infinite order partial differential equations: V. V. Gorodetsky, R. I. Petryshyn, and T. S. Todoriko; Volume 18, No.2, pp. 176-191; Link PDF
Error estimates for the averaging method in impulsive boundary-value problems with parameters: R. I. Petryshyn and L. M. Lakusta; Volume 5, No.2, pp. 193-207; Link
Nonlocal problem for autonomous quasilinear parabolic pseudo- differential equations with deviating argument: Y. M. Drin and R. I. Petryshyn; Volume 18, No.2, pp. 200-212; Link PDF
Estimating of error for averaging method in multifrequency systems with constant delays: R. I. Petryshyn and I. M. Danylyuk; Volume 9, No.2, pp. 233-243; Link PDF
Oleksandr Andriiovych Boichuk (on 60-th anniversary of his birthday): A. M. Samoilenko, M. O. Perestyuk, J. Diblík, M. Medveď, I. O. Parasyuk, R. I. Petryshyn, O. M. Stanzhitskyi, Y. V. Teplinsky, V. I. Tkachenko, M. Fečkan, and S. M. Chuiko; Volume 13, No.2, pp. 287-288; Link PDF
A Cauchy problem for evolution pseudodifferential equations with variable symbols: V. V. Gorodetsky, O. V. Martynyuk, and R. I. Petryshyn; Volume 17, No.3, pp. 314-331; Link PDF
Stability of the integral manifold of an oscillating system with slowly changing frequencies and an impulsive effect: R. I. Petryshyn and P. M. Dudnytskyi; Volume 7, No.3, pp. 365-394; Link PDF
Vasyl’ Yukhymovych Slyusarchuk (on his 70th birthday): A. M. Samoilenko, M. O. Perestyuk, A. A. Boichuk, M. F. Gorodnii, I. O. Parasyuk, R. I. Petryshyn, V. I. Tkachenko, and S. I. Trofimchuk; Volume 19, No.3, pp. 431-432; Link PDF
Vasyl Yukhymovych Slyusarchuk (on his 75th birthday): M. O. Perestyuk, A. A. Boichuk, M. F. Gorodnii, I. O. Parasyuk, R. I. Petryshyn, and V. I. Tkachenko; Volume 24, No.3, pp. 435-436; Link PDF
On the generalized Cauchy problem for the evolutionary equation with operator of fractional differentiation: V. V. Gorodetsky, O. V. Martynyuk, and R. I. Petryshyn; Volume 23, No.4, pp. 457-475; Link PDF
About the fundamental matrix of a linear system with quickly oscillating corfficients: R. I. Petryshyn and T. M. Sopronyuk; Volume 3, No.4, pp. 497-504; Link
Averaging in a boundary-value problem for a multifrequency system with a drift in the argument: R. I. Petryshyn and I. M. Danylyuk; Volume 10, No.4, pp. 519-527; Link PDF