Two-level preconditioning for h-version boundary element approximation of hypersingular operator with GenEO


In the present contribution, we consider symmetric positive definite operators stemming from boundary integral equation (BIE), and we study a two-level preconditioner where the coarse space is built using local generalized eigenproblems in the overlap. We will refer to this coarse space as the GenEO coarse space.

Numerische Mathematik, Sep 2020, Vol. 146, Issue 3, Pages 597-628
Pierre Marchand
Pierre Marchand
Researcher at Inria