Non-Abelian Pseudocompact Groups
Copyright policy )Non-Abelian Pseudocompact Groups
Here are three recently-established theorems from the literature. (A) (2006) Every non-metrizable compact abelian group K has 2|K| -many proper dense pseudocompact subgroups. (B) (2003) Every non-metrizable compact abelian group K admits 22|K| -many strictly finer pseudocompact topological group refinements. (C) (2007) Every non-metrizable pseudocompact abelian group has a proper dense pseudocompact subgroup and a strictly finer pseudocompact topological group refinement. (Theorems (A), (B) and (C) become false if the non-metrizable hypothesis is omitted.) With a detailed view toward the relevant literature, the present authors ask: What happens to (A), (B), (C) and to similar known facts about pseudocompact abelian groups if the abelian hypothesis is omitted? Are the resulting statements true, false, true under certain natural additional hypotheses, etc.? Several new results responding in part to these questions are given, and several specific additional questions are posed.
- University of Paderborn Germany
- Wesleyan University United States
extremal pseudocompact group, topological group, <i>ω</i>-bounded group, Gδ-dense subgroup, \(\omega\)-bounded group, \(G_\delta\)-dense subgroup, Compact groups, pseudocompact topological group, refinement of topology, Structure of general topological groups, group topology, countably compact group, QA1-939, Cardinality properties (cardinal functions and inequalities, discrete subsets), ω-bounded group, Mathematics, G<i><sub>δ</sub></i>-dense subgroup, Topological groups (topological aspects)
extremal pseudocompact group, topological group, <i>ω</i>-bounded group, Gδ-dense subgroup, \(\omega\)-bounded group, \(G_\delta\)-dense subgroup, Compact groups, pseudocompact topological group, refinement of topology, Structure of general topological groups, group topology, countably compact group, QA1-939, Cardinality properties (cardinal functions and inequalities, discrete subsets), ω-bounded group, Mathematics, G<i><sub>δ</sub></i>-dense subgroup, Topological groups (topological aspects)
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