On strongly reflexive topological groups
- Chasco, M. J. 1
- Martin-Peinador, E. 2
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1
Universidad de Navarra
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2
Universidad Complutense de Madrid
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ISSN: 1576-9402, 1989-4147
Year of publication: 2001
Volume: 2
Issue: 2
Pages: 219-226
Type: Article
More publications in: Applied general topology
Abstract
An Abelian topological group G is strongly reflexive if every closed subgroup and every Hausdorff quotient of G and of its dual group G⋀, is reflexive. In this paper we prove the following: the annihilator of a closed subgroup of an almost metrizable group is topologically isomorphic to the dual of the corresponding Hausdorff quotient, and an analogous statement holds for the character group of the starting group. As a consequence of this perfect duality, an almost metrizable group is strongly reflexive just if its Hausdorff quotients, as well as the Hausdorff quotients of its dual, are reflexive. The simplification obtained may be significant from an operative point of view.