Nondiscrete P-Groups Can be Reflexive

Details Nondiscrete P-Groups Can be Reflexive Nondiscrete P-Groups Can be Reflexive

2010-02-25

arxiv.org/abs/1002.4730v1

Mathematics

General Topology

29 pages

Scientific paper

We present a series of examples of nondiscrete reflexive P-groups (i.e., groups in which all $G_\delta$-sets are open) as well as noncompact reflexive $\omega$-bounded groups (in which the closure of every countable set is compact). Our main result implies that every product of feathered (equivalently, almost metrizable) Abelian groups equipped with the P-modified topology is a reflexive group. In particular, every compact Abelian group with the P-modified topology is reflexive. This answers a question posed by S. Hern\'andez and P. Nickolas and solves a problem raised by Ardanza-Trevijano, Chasco, Dom\'{\i}nguez, and Tkachenko.

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