Hereditarily h-complete groups

Gábor Lukács

doi:10.1016/j.topol.2004.06.009

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Hereditarily h-complete groups

Gábor Lukács

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Abstract

A topological group G is h-complete if every continuous homomorphic image of G is (Raikov-)complete; we say that G is hereditarily h-complete if every closed subgroup of G is h-complete. In this paper, we establish open-map properties of hereditarily h-complete groups with respect to large classes of groups, and prove a theorem on the (total) minimality of subdirectly represented groups. Numerous applications are presented, among them: 1. Every hereditarily h-complete group with quasi-invariant basis is the projective limit of its metrizable quotients; 2. If every countable discrete hereditarily h-complete group is finite, then every locally compact hereditarily h-complete group that has small invariant neighborhoods is compact. In the sequel, several open problems are formulated.

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Gábor Lukács. 2004-02-14. Hereditarily h-complete groups. https://doi.org/10.1016/j.topol.2004.06.009

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