An efficient approach to the numerical verification for solutions of elliptic differential equations

Mitsuhiro T. Nakao, Yoshitaka Watanabe

Research output: Contribution to journalArticle

15 Citations (Scopus)


The authors and their colleagues have developed numerical verification methods for solutions of second-order elliptic boundary value problems based on the infinite-dimensional fixed-point theorem using the Newton-like operator with appropriate approximation and constructive a priori error estimates for Poisson's equations. Many verification results show that the authors' methods are sufficiently useful when the equation has no first-order derivative. However, in the case that the equation includes the term of a first-order derivative, there is a possibility that the verification algorithm does not work even though we adopt a sufficiently accurate approximation subspace. The purpose of this paper is to propose an alternative method to overcome this difficulty. Numerical examples which confirm the effectiveness of the new method are presented.

Original languageEnglish
Pages (from-to)311-323
Number of pages13
JournalNumerical Algorithms
Issue number1-4 SPEC. ISS.
Publication statusPublished - 2004 Dec
Externally publishedYes



  • elliptic equations
  • fixed-point theorem
  • numerical verification

ASJC Scopus subject areas

  • Applied Mathematics

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