English

Non unique solutions to boundary value problems for non symmetric divergence form equations

Analysis of PDEs 2007-10-31 v2 Classical Analysis and ODEs

Abstract

We calculate explicitly solutions to the Dirichlet and Neumann boundary value problems in the upper half plane, for a family of divergence form equations with non symmetric coefficients with a jump discontinuity. It is shown that the boundary equation method and the Lax--Milgram method for constructing solutions may give two different solutions when the coefficients are sufficiently non symmetric.

Keywords

Cite

@article{arxiv.0709.2255,
  title  = {Non unique solutions to boundary value problems for non symmetric divergence form equations},
  author = {Andreas Axelsson},
  journal= {arXiv preprint arXiv:0709.2255},
  year   = {2007}
}

Comments

Revised version. To appear in Transactions of the American Mathematical Society

R2 v1 2026-06-21T09:17:32.850Z