Stefanchuk Mariia Volodymyrivna
Publications
2026 - Stefanchuk M. On the power growth order of homeomorphisms of certain classes. Canadian Mathematical Bulletin, published online 2026, 1-22. https://doi.org/10.4153/S0008439525101574
2025 - Petkov I., Salimov R., Stefanchuk M. Sharp lower bounds for area distortion via growth control of angular dilatations. Complex Analysis and Operator Theory, 2025, v. 19, article number 162. https://doi.org/10.1007/s11785-025-01787-3
2025 - Klishchuk B., Salimov R., Stefanchuk M. On the asymptotic behavior of the diameter of image of a ball at infinity. Ukr. Math. J., 2025, v. 77, 867889. https://doi.org/10.1007/s11253-025-02496-y
2025 - Stefanchuk M.V. On local properties of regular homeomorphisms. J. Math. Sci., 2025, v. 292, no. 4., 508-528. https://doi.org/10.1007/s10958-025-07935-6
2025 - Petkov I.V., Salimov R.R., Stefanchuk M.V. Asymptotic behavior at infinity of solutions of the Beltrami equation with two characteristics. J. Math. Sci., 2025. https://doi.org/10.1007/s10958-025-07942-7
2025 - Stefanchuk M.V. On exponential asymptotics at infinity of lower Q-homeomorphisms on the complex plane. Proceedings of IAMM of NAS of Ukraine, 2025, v. 39, no. 1, 53-66. https://doi.org/10.37069/1683-4720-2025-39-5
2025 - Petkov I., Salimov R., Stefanchuk M. On local Hölder and Lipschitz continuities of solutions to nonlinear Beltrami equation. New Tools in Mathematical Analysis and Applications. ISAAC 2023. Trends in Mathematics, 2025, 109119. https://doi.org/10.1007/978-3-031-77050-0_10
2024 - Klishchuk B., Salimov R., Stefanchuk M. On the asymptotic behavior at infinity of ring and lower Q-homeomorphisms with respect to the p-modulus. Transactions of Institute of Mathematics, the NAS of Ukraine, 2024, v. 21, no. 1, 82101. https://doi.org/10.3842/trim.v21n1.542
2024 - Stefanchuk M.V. On asymptotic behavior at infinity of lower Q-homeomorphisms with respect to p-modulus on the complex plane. Proc. IAMM NASU, 2024, v. 38, no. 2, 103-118. https://doi.org/10.37069/1683-4720-2024-38-10
2024 - Salimov R., Stefanchuk M. Finite Lipschitzness of regular solutions to nonlinear Beltrami equation. Complex Variables and Elliptic Equations, 2024, v. 69, no. 6, 913-923. https://doi.org/10.1080/17476933.2023.2166498
2024 - Petkov I., Salimov R., Stefanchuk M. Nonlinear Beltrami equation: lower estimates of Schwarz lemmas type. Canadian Mathematical Bulletin, 2024, v. 67, no. 3, 533-543. https://doi.org/10.4153/S0008439523000942
2024 - Petkov I., Salimov R., Stefanchuk M. Asymptotic behavior of solutions of the nonlinear Beltrami equation with the Jacobian. J. Math. Sci., 2024, v. 280, 971-983. https://doi.org/10.1007/s10958-024-07280-0
2024 - Stefanchuk M.V. On exponential asymptotics of one class of homeomorphisms at a point of the complex plane. Proceedings of the International Geometry Center, 2024, v. 17, no. 2, 158-170. https://doi.org/10.15673/pigc.v17i2.2870
2024 - Stefanchuk M.V. On exponential asymptotics of ring Q-homeomorphisms at infinity. Ukrainian Mathematical Bulletin, 2024, v. 21, no. 1, 107-119.
In English: Stefanchuk M.V. On exponential asymptotics of ring Q-homeomorphisms at infinity. J. Math. Sci., 2024, v. 282, no. 1, 83-92. https://doi.org/10.1007/s10958-024-07170-5
2024 - Stefanchuk M.V. On generalized convex sets and their applications. Ukrainian Mathematical Bulletin, 2024, v. 21, no. 2, 255-278.
In English: Stefanchuk M.V. On generalized convex sets and their applications. J. Math. Sci., 2024, 284, no. 3, 383-399. https://doi.org/10.1007/s10958-024-07357-w
2023 - Petkov I.V., Salimov R.R., Stefanchuk M.V. On the distortion of the disk image diameter. Ukrainian Mathematical Bulletin, 2023, v. 20, no. 2, 219240.
In English: Petkov I.V., Salimov R.R., Stefanchuk M.V. On the distortion of the disk image diameter. J. Math. Sci., 2023, 274, 352-369. https://doi.org/10.1007/s10958-023-06605-9
2023 - Salimov R., Klishchuk B., Stefanchuk M. On the asymptotic behavior at infinity of one mapping class. Proceedings of the International Geometry Center, 2023, v. 16, no. 1, 50-58. https://doi.org/10.15673/tmgc.v16i1.2394
2023 - Klishchuk B., Salimov R., Stefanchuk M. Schwarz lemma type estimates for solutions to nonlinear Beltrami equation. Analysis, Applications, and Computations. Trends in Mathematics, 2023, 295305. https://doi.org/10.1007/978-3-031-36375-7_22
2022 - Salimov R.R., Stefanchuk M.V. On some properties of solutions of a nonlinear system of the Cauchy-Riemann-Beltrami type. Transactions of Institute of Mathematics, the NAS of Ukraine, 2022, v. 19, 210-220. https://trim.imath.kiev.ua/index.php/trim/issue/view/32
2022 - Salimov R., Stefanchuk M. Global finite mean oscillation and the Beltrami equation. (Hyper)complex seminar 2021 in memoriam of Prof. Julian Lawrynowicz. A monograph, 2022. https://doi.org/10.26485/978-83-60655-92-4/8
2022 - Salimov R., Stefanchuk M. Functional asymptotics of solutions of nonlinear Cauchy-Riemann-Beltrami system. Nonlinear oscillations, 2022, v. 25, no. 4, 388-403.
In English: Salimov R.R., Stefanchuk M.V. Functional asymptotics of solutions of the nonlinear Cauchy-Riemann-Beltrami system. J. Math. Sci., 2023, 277, 311-328. https://doi.org/10.1007/s10958-023-06835-x
2022 - Salimov R., Stefanchuk M. Nonlinear Beltrami equation and asymptotics of its solution. Ukrainian Mathematical Bulletin, 2022, v. 19, no. 2, 237253.
In English: Salimov R., Stefanchuk M. Nonlinear Beltrami equation and asymptotics of its solution. J. Math. Sci., 2022, v. 264, 441-454. https://doi.org/10.1007/s10958-022-06010-8
2022 - Stefanchuk M.V. On extremal problems of exponential type for solutions of the nonlinear Beltrami equation. Proceedings of IAMM of NASU, 2022, v. 36, no. 1, 36-43. https://doi.org/10.32782/1683-4720-2022-36-3
2021 - Salimov R.R, Stefanchuk M.V. Logarithmic asymptotics of the nonlinear Cauchy-Riemann-Beltrami equation. Ukrains'kyi Matematychnyi Zhurnal, 2021, v. 73, no. 3, 395-407. https://doi.org/10.37863/umzh.v73i3.6403
In English: Salimov R.R., Stefanchuk M.V. Logarithmic asymptotics of the nonlinear Cauchy-Riemann-Beltrami equation. Ukr. Math. J., 2021, v. 73, 463-478. https://doi.org/10.1007/s11253-021-01936-9
2020 - Salimov R.R, Stefanchuk M.V. On one extremal problem for nonlinear Cauchy-Riemann-Beltrami systems. Proceedings of IAMM of NASU, 2020, v. 34, 109-115. https://doi.org/10.37069/1683-4720-2020-34-11
2020 - Salimov R.R, Stefanchuk M.V. On the local properties of solutions of the nonlinear Beltrami equation. Ukrainian Mathematical Bulletin, 2020, v. 17, no. 1, 77-94.
In English: Salimov R.R, Stefanchuk M.V. On the local properties of solutions of the nonlinear Beltrami equation. J. Math. Sci., 2020, v. 248, 203-216. https://doi.org/10.1007/s10958-020-04870-6
2019 - Golberg A., Salimov R., Stefanchuk M. Asymptotic dilation of regular homeomorphisms. Complex Analysis and Operator Theory, 2019, v. 13, no. 6, 2813-2827. https://doi.org/10.1007/s11785-018-0833-2
2019 - Klishchuk B.A., Salimov R.R, Stefanchuk M.V. Asymptotics of solutions of nonlinear Beltrami equations. Reports of the National Academy of Sciences of Ukraine, 2019, no. 2, 17-22. https://doi.org/10.15407/dopovidi2019.02.017
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, v. LXVIII, no. 2, 85-94. https://doi.org/10.26485/0459-6854/2018/68.2/9
2017 - Stefanchuk M.V. Properties of conjugate functions in a hypercomplex space. Proceedings of the International Geometry Center, 2017, v. 10, no. 2, 39-46. https://doi.org/10.15673/tmgc.v10i2.652
2017 - Stefanchuk M.V. Generalized convex sets and their applications. Transactions of Institute of Mathematics, the NAS of Ukraine, 2017, v. 14, no. 1, 249-261. http://trim.imath.kiev.ua/index.php/trim/article/view/154
2016 - Stefanchuk M.V. Extremal elements in a hypercomplex space. Reports of the National Academy of Sciences of Ukraine, 2016, no. 4, 13-19. https://doi.org/10.15407/dopovidi2016.04.013
2016 - Zelinskii Y.B., Stefanchuk M.V. Generalizations of the shadow problem. Ukrains'kyi Matematychnyi Zhurnal, 2016, v. 68, no. 6, 757-763. http://umj.imath.kiev.ua/index.php/umj/article/view/1876
In English: Zelins'kyi Y.B., Stefanchuk M.V. Generalizations of the shadow problem. Ukr. Math. J., 2016, v. 68, 862-867. https://doi.org/10.1007/s11253-016-1262-x
2015 - Zelinskii Y.B., Vyhovs'ka I.Y., Stefanchuk M.V. Generalized convex sets and the problem of shadow. Ukrains'kyi Matematychnyi Zhurnal, 2015, v. 67, no. 12, 1658-1666. http://umj.imath.kiev.ua/index.php/umj/article/view/2098
In English: Zelinskii Y.B., Vygovskaya I.Y., Stefanchuk M.V. Generalized convex sets and the problem of shadow. Ukr. Math. J., 2016, v. 67, 1874-1883. https://doi.org/10.1007/s11253-016-1196-3
2015 - Zelinskii Y.B., Vyhovs'ka I.Y., Stefanchuk M.V. Shadow's problem. Reports of the National Academy of Sciences of Ukraine, 2015, no. 5, 15-20. https://doi.org/10.15407/dopovidi2015.05.015
2015 - Stefanchuk M.V., Tkachuk M.V. The set of measure zero that contains spheres of all radiuses. Transactions of Institute of Mathematics, the NAS of Ukraine, 2015, v. 12, no. 4, 285-289. https://trim.imath.kiev.ua/index.php/trim/article/view/303
2015 - Stefanchuk M.V., Tkachuk M.V. Linear convex and conjugate functions in a hypercomplex space. Transactions of Institute of Mathematics, the NAS of Ukraine, 2015, v. 12, no. 3, 225-235. https://trim.imath.kiev.ua/index.php/trim/article/view/189
2025 - Petkov I., Salimov R., Stefanchuk M. Sharp lower bounds for area distortion via growth control of angular dilatations. Complex Analysis and Operator Theory, 2025, v. 19, article number 162. https://doi.org/10.1007/s11785-025-01787-3
2025 - Klishchuk B., Salimov R., Stefanchuk M. On the asymptotic behavior of the diameter of image of a ball at infinity. Ukr. Math. J., 2025, v. 77, 867889. https://doi.org/10.1007/s11253-025-02496-y
2025 - Stefanchuk M.V. On local properties of regular homeomorphisms. J. Math. Sci., 2025, v. 292, no. 4., 508-528. https://doi.org/10.1007/s10958-025-07935-6
2025 - Petkov I.V., Salimov R.R., Stefanchuk M.V. Asymptotic behavior at infinity of solutions of the Beltrami equation with two characteristics. J. Math. Sci., 2025. https://doi.org/10.1007/s10958-025-07942-7
2025 - Stefanchuk M.V. On exponential asymptotics at infinity of lower Q-homeomorphisms on the complex plane. Proceedings of IAMM of NAS of Ukraine, 2025, v. 39, no. 1, 53-66. https://doi.org/10.37069/1683-4720-2025-39-5
2025 - Petkov I., Salimov R., Stefanchuk M. On local Hölder and Lipschitz continuities of solutions to nonlinear Beltrami equation. New Tools in Mathematical Analysis and Applications. ISAAC 2023. Trends in Mathematics, 2025, 109119. https://doi.org/10.1007/978-3-031-77050-0_10
2024 - Klishchuk B., Salimov R., Stefanchuk M. On the asymptotic behavior at infinity of ring and lower Q-homeomorphisms with respect to the p-modulus. Transactions of Institute of Mathematics, the NAS of Ukraine, 2024, v. 21, no. 1, 82101. https://doi.org/10.3842/trim.v21n1.542
2024 - Stefanchuk M.V. On asymptotic behavior at infinity of lower Q-homeomorphisms with respect to p-modulus on the complex plane. Proc. IAMM NASU, 2024, v. 38, no. 2, 103-118. https://doi.org/10.37069/1683-4720-2024-38-10
2024 - Salimov R., Stefanchuk M. Finite Lipschitzness of regular solutions to nonlinear Beltrami equation. Complex Variables and Elliptic Equations, 2024, v. 69, no. 6, 913-923. https://doi.org/10.1080/17476933.2023.2166498
2024 - Petkov I., Salimov R., Stefanchuk M. Nonlinear Beltrami equation: lower estimates of Schwarz lemmas type. Canadian Mathematical Bulletin, 2024, v. 67, no. 3, 533-543. https://doi.org/10.4153/S0008439523000942
2024 - Petkov I., Salimov R., Stefanchuk M. Asymptotic behavior of solutions of the nonlinear Beltrami equation with the Jacobian. J. Math. Sci., 2024, v. 280, 971-983. https://doi.org/10.1007/s10958-024-07280-0
2024 - Stefanchuk M.V. On exponential asymptotics of one class of homeomorphisms at a point of the complex plane. Proceedings of the International Geometry Center, 2024, v. 17, no. 2, 158-170. https://doi.org/10.15673/pigc.v17i2.2870
2024 - Stefanchuk M.V. On exponential asymptotics of ring Q-homeomorphisms at infinity. Ukrainian Mathematical Bulletin, 2024, v. 21, no. 1, 107-119.
In English: Stefanchuk M.V. On exponential asymptotics of ring Q-homeomorphisms at infinity. J. Math. Sci., 2024, v. 282, no. 1, 83-92. https://doi.org/10.1007/s10958-024-07170-5
2024 - Stefanchuk M.V. On generalized convex sets and their applications. Ukrainian Mathematical Bulletin, 2024, v. 21, no. 2, 255-278.
In English: Stefanchuk M.V. On generalized convex sets and their applications. J. Math. Sci., 2024, 284, no. 3, 383-399. https://doi.org/10.1007/s10958-024-07357-w
2023 - Petkov I.V., Salimov R.R., Stefanchuk M.V. On the distortion of the disk image diameter. Ukrainian Mathematical Bulletin, 2023, v. 20, no. 2, 219240.
In English: Petkov I.V., Salimov R.R., Stefanchuk M.V. On the distortion of the disk image diameter. J. Math. Sci., 2023, 274, 352-369. https://doi.org/10.1007/s10958-023-06605-9
2023 - Salimov R., Klishchuk B., Stefanchuk M. On the asymptotic behavior at infinity of one mapping class. Proceedings of the International Geometry Center, 2023, v. 16, no. 1, 50-58. https://doi.org/10.15673/tmgc.v16i1.2394
2023 - Klishchuk B., Salimov R., Stefanchuk M. Schwarz lemma type estimates for solutions to nonlinear Beltrami equation. Analysis, Applications, and Computations. Trends in Mathematics, 2023, 295305. https://doi.org/10.1007/978-3-031-36375-7_22
2022 - Salimov R.R., Stefanchuk M.V. On some properties of solutions of a nonlinear system of the Cauchy-Riemann-Beltrami type. Transactions of Institute of Mathematics, the NAS of Ukraine, 2022, v. 19, 210-220. https://trim.imath.kiev.ua/index.php/trim/issue/view/32
2022 - Salimov R., Stefanchuk M. Global finite mean oscillation and the Beltrami equation. (Hyper)complex seminar 2021 in memoriam of Prof. Julian Lawrynowicz. A monograph, 2022. https://doi.org/10.26485/978-83-60655-92-4/8
2022 - Salimov R., Stefanchuk M. Functional asymptotics of solutions of nonlinear Cauchy-Riemann-Beltrami system. Nonlinear oscillations, 2022, v. 25, no. 4, 388-403.
In English: Salimov R.R., Stefanchuk M.V. Functional asymptotics of solutions of the nonlinear Cauchy-Riemann-Beltrami system. J. Math. Sci., 2023, 277, 311-328. https://doi.org/10.1007/s10958-023-06835-x
2022 - Salimov R., Stefanchuk M. Nonlinear Beltrami equation and asymptotics of its solution. Ukrainian Mathematical Bulletin, 2022, v. 19, no. 2, 237253.
In English: Salimov R., Stefanchuk M. Nonlinear Beltrami equation and asymptotics of its solution. J. Math. Sci., 2022, v. 264, 441-454. https://doi.org/10.1007/s10958-022-06010-8
2022 - Stefanchuk M.V. On extremal problems of exponential type for solutions of the nonlinear Beltrami equation. Proceedings of IAMM of NASU, 2022, v. 36, no. 1, 36-43. https://doi.org/10.32782/1683-4720-2022-36-3
2021 - Salimov R.R, Stefanchuk M.V. Logarithmic asymptotics of the nonlinear Cauchy-Riemann-Beltrami equation. Ukrains'kyi Matematychnyi Zhurnal, 2021, v. 73, no. 3, 395-407. https://doi.org/10.37863/umzh.v73i3.6403
In English: Salimov R.R., Stefanchuk M.V. Logarithmic asymptotics of the nonlinear Cauchy-Riemann-Beltrami equation. Ukr. Math. J., 2021, v. 73, 463-478. https://doi.org/10.1007/s11253-021-01936-9
2020 - Salimov R.R, Stefanchuk M.V. On one extremal problem for nonlinear Cauchy-Riemann-Beltrami systems. Proceedings of IAMM of NASU, 2020, v. 34, 109-115. https://doi.org/10.37069/1683-4720-2020-34-11
2020 - Salimov R.R, Stefanchuk M.V. On the local properties of solutions of the nonlinear Beltrami equation. Ukrainian Mathematical Bulletin, 2020, v. 17, no. 1, 77-94.
In English: Salimov R.R, Stefanchuk M.V. On the local properties of solutions of the nonlinear Beltrami equation. J. Math. Sci., 2020, v. 248, 203-216. https://doi.org/10.1007/s10958-020-04870-6
2019 - Golberg A., Salimov R., Stefanchuk M. Asymptotic dilation of regular homeomorphisms. Complex Analysis and Operator Theory, 2019, v. 13, no. 6, 2813-2827. https://doi.org/10.1007/s11785-018-0833-2
2019 - Klishchuk B.A., Salimov R.R, Stefanchuk M.V. Asymptotics of solutions of nonlinear Beltrami equations. Reports of the National Academy of Sciences of Ukraine, 2019, no. 2, 17-22. https://doi.org/10.15407/dopovidi2019.02.017
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, v. LXVIII, no. 2, 85-94. https://doi.org/10.26485/0459-6854/2018/68.2/9
2017 - Stefanchuk M.V. Properties of conjugate functions in a hypercomplex space. Proceedings of the International Geometry Center, 2017, v. 10, no. 2, 39-46. https://doi.org/10.15673/tmgc.v10i2.652
2017 - Stefanchuk M.V. Generalized convex sets and their applications. Transactions of Institute of Mathematics, the NAS of Ukraine, 2017, v. 14, no. 1, 249-261. http://trim.imath.kiev.ua/index.php/trim/article/view/154
2016 - Stefanchuk M.V. Extremal elements in a hypercomplex space. Reports of the National Academy of Sciences of Ukraine, 2016, no. 4, 13-19. https://doi.org/10.15407/dopovidi2016.04.013
2016 - Zelinskii Y.B., Stefanchuk M.V. Generalizations of the shadow problem. Ukrains'kyi Matematychnyi Zhurnal, 2016, v. 68, no. 6, 757-763. http://umj.imath.kiev.ua/index.php/umj/article/view/1876
In English: Zelins'kyi Y.B., Stefanchuk M.V. Generalizations of the shadow problem. Ukr. Math. J., 2016, v. 68, 862-867. https://doi.org/10.1007/s11253-016-1262-x
2015 - Zelinskii Y.B., Vyhovs'ka I.Y., Stefanchuk M.V. Generalized convex sets and the problem of shadow. Ukrains'kyi Matematychnyi Zhurnal, 2015, v. 67, no. 12, 1658-1666. http://umj.imath.kiev.ua/index.php/umj/article/view/2098
In English: Zelinskii Y.B., Vygovskaya I.Y., Stefanchuk M.V. Generalized convex sets and the problem of shadow. Ukr. Math. J., 2016, v. 67, 1874-1883. https://doi.org/10.1007/s11253-016-1196-3
2015 - Zelinskii Y.B., Vyhovs'ka I.Y., Stefanchuk M.V. Shadow's problem. Reports of the National Academy of Sciences of Ukraine, 2015, no. 5, 15-20. https://doi.org/10.15407/dopovidi2015.05.015
2015 - Stefanchuk M.V., Tkachuk M.V. The set of measure zero that contains spheres of all radiuses. Transactions of Institute of Mathematics, the NAS of Ukraine, 2015, v. 12, no. 4, 285-289. https://trim.imath.kiev.ua/index.php/trim/article/view/303
2015 - Stefanchuk M.V., Tkachuk M.V. Linear convex and conjugate functions in a hypercomplex space. Transactions of Institute of Mathematics, the NAS of Ukraine, 2015, v. 12, no. 3, 225-235. https://trim.imath.kiev.ua/index.php/trim/article/view/189