University proceedings. Volga region. Physical and mathematical sciences: Latest issue http://www.mathnet.ru/eng/ivpnz 2025, Issue Issue 3 en-gb Copyright 2026, Federal State Budgetary Educational Institution of Higher Education “Penza State University” Fri, 16 Jan 2026 00:00:00 +0300 math-net2026_03@mi-ras.ru tche@mi-ras.ru University proceedings. Volga region. Physical and mathematical sciences http://www.mathnet.ru/JrnLogos/ivpnz/ivpnz.jpg http://www.mathnet.ru/eng/ivpnz On the convergence of Galerkin method for solving hypersingular integral equations in special classes of functions Yu. G. Smirnov University proceedings. Volga region. Physical and mathematical sciences, 2025:3, 3--12 http://mi.mathnet.ru/eng/ivpnz841 Fri, 16 Jan 2026 00:00:00 +0300 Wed, 07 Jan 2026 00:00:00 +0300 http://mi.mathnet.ru/eng/ivpnz841 Numerical method for solving scalar problem of monochromatic wave scattering from a screen with nonlinear transmission conditions V. O. Nesterov, A. A. Tsupak University proceedings. Volga region. Physical and mathematical sciences, 2025:3, 13--22 http://mi.mathnet.ru/eng/ivpnz842 Fri, 16 Jan 2026 00:00:00 +0300 Wed, 07 Jan 2026 00:00:00 +0300 http://mi.mathnet.ru/eng/ivpnz842 Poisson ultimate equiboundedness and ultimate equioscillation of sets of all solutions of differential equations' systems K. S. Lapin University proceedings. Volga region. Physical and mathematical sciences, 2025:3, 23--35 http://mi.mathnet.ru/eng/ivpnz843 Fri, 16 Jan 2026 00:00:00 +0300 Wed, 07 Jan 2026 00:00:00 +0300 http://mi.mathnet.ru/eng/ivpnz843 An iterative algorithm for solving nonlinear integral equations B. A. Zaytsev, M. Yu. Medvedik University proceedings. Volga region. Physical and mathematical sciences, 2025:3, 36--44 http://mi.mathnet.ru/eng/ivpnz844 Fri, 16 Jan 2026 00:00:00 +0300 Wed, 07 Jan 2026 00:00:00 +0300 http://mi.mathnet.ru/eng/ivpnz844 Tunable polarization magneto-optical effects at scattering of terahertz radiation on graphene nanoribbon gratings in a magnetic field G. S. Makeeva, M. S. Nikitin University proceedings. Volga region. Physical and mathematical sciences, 2025:3, 45--65 http://mi.mathnet.ru/eng/ivpnz845 Fri, 16 Jan 2026 00:00:00 +0300 Thu, 15 Jan 2026 00:00:00 +0300 http://mi.mathnet.ru/eng/ivpnz845 Influence of constant magnetic field on fatigue life of diamagnetics: the role of the Zeeman effect in the fatigue strength of non-ferrous metals V. V. Shlyarov, A. A. Serebryakova, K. V. Aksenova, D. V. Zagulyaev University proceedings. Volga region. Physical and mathematical sciences, 2025:3, 66--80 http://mi.mathnet.ru/eng/ivpnz846 Fri, 16 Jan 2026 00:00:00 +0300 Fri, 16 Jan 2026 00:00:00 +0300 http://mi.mathnet.ru/eng/ivpnz846 Spiral structure of disk galaxies and hidden mass effect V. M. Zhuravlev University proceedings. Volga region. Physical and mathematical sciences, 2025:3, 81--105 http://mi.mathnet.ru/eng/ivpnz847 Fri, 16 Jan 2026 00:00:00 +0300 Thu, 08 Jan 2026 00:00:00 +0300 http://mi.mathnet.ru/eng/ivpnz847 Analysis of relaxation time dependences on influencing factors in conducting oxides based on $SnO_2:Sb$ T. O. Zinchenko, E. A. Pecherskaya, V. D. Krevchik, I. A. Rubtsov, D. V. Yakushov, V. S. Aleksandrov University proceedings. Volga region. Physical and mathematical sciences, 2025:3, 106--118 http://mi.mathnet.ru/eng/ivpnz848 Fri, 16 Jan 2026 00:00:00 +0300 Thu, 08 Jan 2026 00:00:00 +0300 http://mi.mathnet.ru/eng/ivpnz848 Modification of granulometric composition of ultrafine silver powders K. N. Nishchev, M. I. Novopol'tsev, S. G. Kostryukov, A. A. Pynenkov, E. N. Lyutova, E. V. Bezrukova University proceedings. Volga region. Physical and mathematical sciences, 2025:3, 119--131 http://mi.mathnet.ru/eng/ivpnz849 Fri, 16 Jan 2026 00:00:00 +0300 Thu, 08 Jan 2026 00:00:00 +0300 http://mi.mathnet.ru/eng/ivpnz849