Stability and equivariant Gromov--Hausdorff convergence

Abstract

We give applications of equivariant Gromov--Hausdorff convergence in various contexts. Namely, using equivariant Gromov--Hausdorff convergence, we prove a stability result in the setting of compact finite dimensional Alexandrov spaces. Moreover, we introduce the notion of an \emph{almost commutative diagram} and show that its use simplifies both exposition and argument.

Minor revisions. Accepted for publication at the Bulletin of the London Mathematical Society