Výsledky vyhledávání - "M. Vincenta Ferrer"

A classification of the cofinal structures of precompacta

Autor: Boaz Tsaban, Salvador Hernández, Piotr Szewczak, Aviv Eshed, M. Vincenta Ferrer

Publikováno v: Repositori Universitat Jaume I
Universitat Jaume I

We provide a complete classification of the possible cofinal structures of the families of precompact (totally bounded) sets in general metric spaces, and compact sets in general complete metric spaces. Using this classification, we classify the cofi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b28379b0a3126c7e9d8df4bbe5ea07f5
http://hdl.handle.net/10234/189225

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The character of topological groups, via bounded systems, Pontryagin–van Kampen duality and pcf theory

Autor: Salvador Hernández, Boaz Tsaban, M. Vincenta Ferrer, Cristina Chis

Publikováno v: Journal of Algebra. 420:86-119

The Birkhoff--Kakutani Theorem asserts that a topological group is metrizable if and only if it has countable character. We develop and apply tools for the estimation of the character for a wide class of nonmetrizable topological groups. We consider

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e4f273c11b109b1170a1830bd1b3836
https://doi.org/10.1016/j.jalgebra.2014.06.040

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