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M-factorizable feathered topological groups
Topology and its Applications ( IF 0.6 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.topol.2020.107481
Wei He , Dekui Peng , Mikhail Tkachenko , Heng Zhang

Abstract We continue the study of M -factorizability in topological groups started in [18] , with a special emphasis on feathered groups. It is shown that a feathered group G is M -factorizable if and only if G is either metrizable or R -factorizable. We also prove that an M -factorizable Cech-complete subgroup H of a topological group G is C-embedded in G. We show that the product G = ∏ n ∈ ω G n of countably many M -factorizable feathered groups is M -factorizable if and only if all the factors are metrizable or R -factorizable. We also show that continuous d-open homomorphisms preserve M -factorizability.

中文翻译:

M 可分解羽化拓扑群

摘要 我们继续研究 [18] 中开始的拓扑群中的 M 可分解性,特别强调羽化群。证明了羽化群 G 是 M 可分解的当且仅当 G 是可度量的或 R 可分解的。我们还证明了拓扑群 G 的 M 可分解 Cech 完全子群 H 是 C 嵌入 G 中的。 我们证明了可数许多 M 可分解羽化群的乘积 G = ∏ n ∈ ω G n 是 M 可分解的当且仅当所有因子都是可度量的或 R 可分解的。我们还表明连续 d-open 同态保持 M 可分解性。
更新日期:2021-02-01
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