Ural Mathematical Journal
Vol. 5, no. 1, 2019
Electronic Periodical Scientific Journal
Founded in 2015
Founders
N.N.Krasovskii Institute of Mathematics and Mechanics of the Ural
Branch of Russian Academy of Sciences
Ural Federal University named after the first President of Russia
B.N.Yeltsin
EDITORIAL TEAM
EDITOR-IN-CHIEF
Vitalii I. Berdyshev, Academician of RAS, Institute of Mathematics and Mechanics, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
DEPUTY CHIEF EDITORS
Vitalii V. Arestov, Ural Federal University, Ekaterinburg, Russia
Nikolai Yu. Antonov, Institute of Mathematics and Mechanics, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Vladislav V. Kabanov, Institute of Mathematics and Mechanics, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
SCIETIFIC EDITORS
Tatiana F. Filippova, Institute of Mathematics and Mechanics, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Vladimir G. Pimenov, Ural Federal University, Ekaterinburg, Russia
EDITORIAL COUNCIL
Alexander G. Chentsov, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Alexander A. Makhnev, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Irina V. Melnikova, Ural Federal University, Ekaterinburg, Russia
Fernando Manuel Ferreira Lobo Pereira, Faculdade de Engenharia da Universidade do Porto, Porto, Portugal
Stefan Pickl, University of the Federal Armed Forces, Munich, Germany
Szilárd G. Révész, Alfréd Rényi Institute of Mathematics of the Hungarian Academy of Sciences. Budapest, Hungary
Lev B. Ryashko, Ural Federal University, Ekaterinburg, Russia
Arseny M. Shur, Ural Federal University, Ekaterinburg, Russia
Vladimir N. Ushakov, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Vladimir V. Vasin, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Mikhail V. Volkov, Ural Federal University, Ekaterinburg, Russia
EDITORIAL BOARD
Elena N. Akimova, Institute of Mathematics and Mechanics, Ural Branch of the Russian Academy of Science, Ekaterinburg, Russia, Russia
Alexander G. Babenko, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Vitalii A. Baranskii, Ural Federal University, Ekaterinburg, Russia
Elena E. Berdysheva, Department of Mathematics, Justus Liebig University, Giessen, Germany
Alexey R. Danilin, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Yuri F. Dolgii, Ural Federal University, Ekaterinburg, Russia
Vakif Dzhafarov (Cafer), Department of Mathematics, Anadolu University, Eskişehir, Turkey
Polina Yu. Glazyrina, Ural Federal University, Ekaterinburg, Russia
Mikhail I. Gusev, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Éva Gyurkovics, Department of Differential Equations, Institute of Mathematics, Budapest University of Technology and Economics, Budapest, Hungary
Marc Jungers, National Center for Scientific Research (CNRS), CRAN, Nancy and Université de Lorraine, CRAN, Nancy, France
Mikhail Yu. Khachay, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Anatolii F. Kleimenov, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Anatoly S. Kondratiev, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Vyacheslav I. Maksimov, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Dmitrii A. Serkov, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
Alexander N. Sesekin, Ural Federal University, Ekaterinburg, Russia
Alexander M. Tarasyev, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
MANAGING EDITOR
Oxana G. Matviychuk, Institute of Mathematics and Mechanics, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia
TECHNICAL ADVISOR
Alexey N. Borbunov, Ural Federal University, Institute of Mathematics and Mechanics of the Ural Branch of Russian Academy of Sciences, Ekaterinburg,
Russia
URAL MATHEMATICAL JOURNAL
ISSN 2414-3952
(Online)
https://umjuran.ru
The Journal is registered by the Federal Service for Supervision in the Sphere of
Communication, Information Technologies and Mass Communications
Certificate of Registration of the Mass Media Эл № ФС77-61719 of 07.05.2015
Contact Information
16 S. Kovalevskaya str., Ekaterinburg, Russia, 620990
Phone: +7 (343) 375-34-73 Fax: +7 (343) 374-25-81
Email: secretary@umjuran.ru
Web-site: https://umjuran.ru
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