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St. Petersburg Mathematical Journal

This journal is a cover-to-cover translation into English of Algebra i Analiz, published six times a year by the mathematics section of the Russian Academy of Sciences.

ISSN 1547-7371 (online) ISSN 1061-0022 (print)

The 2020 MCQ for St. Petersburg Mathematical Journal is 0.68.

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Regular solutions of elliptic boundary-value problems with discontinuous nonlinearities
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by M. G. Lepchinskiĭ and V. N. Pavlenko
Translated by: I. V. Denisova
St. Petersburg Math. J. 17 (2006), 465-475
DOI: https://doi.org/10.1090/S1061-0022-06-00915-0
Published electronically: March 9, 2006

Abstract:

The existence of stable solutions to elliptic boundary-value problems is studied; stability is understood with respect to perturbations of nonlinearities. By the variational method, it is shown that stable solutions of such problems do exist provided a certain integral measure of closeness for (possibly, discontinuous) nonlinearities is employed. It is shown that problems with discontinuous nonlinearities can serve as idealization of problems with continuous nonlinearities but having narrow regions of ill-controlled variations with respect to the phase variable.
References
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Bibliographic Information
  • M. G. Lepchinskiĭ
  • Affiliation: Numerical Mathematics Department, Chelyabinsk State University, Brat’ev Kashirinykh Street 129, Chelyabinsk 454021, Russia
  • Email: myth@csu.ru
  • V. N. Pavlenko
  • Affiliation: Numerical Mathematics Department, Chelyabinsk State University, Brat’ev Kashirinykh Street 129, Chelyabinsk 454021, Russia
  • Received by editor(s): May 26, 2005
  • Published electronically: March 9, 2006
  • © Copyright 2006 American Mathematical Society
  • Journal: St. Petersburg Math. J. 17 (2006), 465-475
  • MSC (2000): Primary 35J65, 35J50
  • DOI: https://doi.org/10.1090/S1061-0022-06-00915-0
  • MathSciNet review: 2167847