Locally Compact Topological Groups and Cofinal Completeness |
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Authors: | Romaguera Salvador; Sanchis Manuel |
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Institution: | Departamento de Matemática Aplicada, Escuela de Caminos, Universidad Politécnica de Valencia 46071 Valencia, Spain, sromague{at}mat.upv.es
Departamento de Matemáticas, Universidad Jaume I Campus del Riu Sec, 12071 Castellón, Spain, sanchis{at}mat.uji.es |
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Abstract: | It is proved that a Tychonoff topological group is locally compactif and only if it is of pointwise countable type and its leftuniformity is cofinally complete. From this result a characterizationis derived of those T0 paratopological groups (X, ) of pointwisecountable type for which (X, 1) is locally compactand also a characterization is deduced of locally pseudocompacttopological groups in terms of cofinal completeness. Also characterizedare the Tychonoff topological groups of pointwise countabletype for which their left uniformity has property U. Finally,cofinal completeness of the HausdorffBourbaki uniformityof a topological group is studied. |
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