On sequentially h-complete groups

Abstract

A topological group $G$ is {\em sequentially $h$-complete} if all the continuous homomorphic images of $G$ are sequentially complete. In this paper we give necessary and sufficient conditions on a complete group for being compact, using the language of sequential $h$-completeness. In the process of obtaining such conditions, we establish a structure theorem for $ω$-precompact sequentially $h$-complete groups. As a consequence we obtain a reduction theorem for the problem of $c$-compactness.