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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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Estimates of deviations from exact solutions for boundary-value problems with incompressibility condition
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by S. Repin
Translated by: the author
St. Petersburg Math. J. 16 (2005), 837-862
DOI: https://doi.org/10.1090/S1061-0022-05-00882-4
Published electronically: September 21, 2005

Abstract:

Methods of estimating the difference between exact and approximate solutions are considered for boundary-value problems in spaces of solenoidal functions. The estimates obtained apply to any functions in the energy space of the respective problem, and their computation requires solving only finite-dimensional problems. In the paper, two different methods are considered: one involves variational formulations and duality theory, and in the other, estimates are obtained from the integral identities that define generalized solutions of the problems in question. It is shown that estimates of deviations from an exact solution must include an additional penalty term with a factor determined by the constant in the Ladyzhenskaya–Babuška–Brezzi condition.
References
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Bibliographic Information
  • S. Repin
  • Affiliation: St. Petersburg Branch, Steklov Mathematical Institute, Russian Academy of Sciences, Fontanka 27, St. Petersburg 191023, Russia
  • Email: repin@pdmi.ras.ru
  • Received by editor(s): December 10, 2003
  • Published electronically: September 21, 2005
  • Additional Notes: This work was supported by the Civilian Research and Development Foundation (grant no. RU-M1-2596-ST-04) and by the Russian Ministry of Education (grant no. E02-1.0-55)

  • Dedicated: Dedicated to the memory of O. A. Ladyzhenskaya
  • © Copyright 2005 American Mathematical Society
  • Journal: St. Petersburg Math. J. 16 (2005), 837-862
  • MSC (2000): Primary 35J50, 65N15, 74G45
  • DOI: https://doi.org/10.1090/S1061-0022-05-00882-4
  • MathSciNet review: 2106670