Interval arithmetic error estimation for the solution of Fredholm integral equation

Ivo Babuška, Kang-Man Liu

Research output: Contribution to journalArticlepeer-review


Finite element method with a posteriori estimation using interval arithmetic is discussed for a Fredholm integral equation of the second kind. This approach is general. It leads to the guaranteed L asymptotically exact estimate without the usual overestimation when interval arithmetic is used. An algorithm is provided for determination of an approximate solution such that the computed error bound between the exact solution and its approximation in L is less than the given tolerance . Numerical solution for the equation with only C1 kernel illustrates the approach.

Original languageEnglish
Pages (from-to)549-566
Number of pages18
JournalInternational Journal of Computer Mathematics
Issue number3
Publication statusPublished - 2009 Mar 1

All Science Journal Classification (ASJC) codes

  • Applied Mathematics
  • Computer Science Applications
  • Computational Theory and Mathematics

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