Papers

Peer-reviewed
Oct, 2017

Selectively sequentially pseudocompact group topologies on torsion and torsion-free Abelian groups

TOPOLOGY AND ITS APPLICATIONS
  • Alejandro Dorantes-Aldama
  • ,
  • Dmitri Shakhmatov

Volume
230
Number
First page
562
Last page
577
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1016/j.topol.2017.08.020
Publisher
ELSEVIER SCIENCE BV

A space X is selectively sequentially pseudocompact if for every family {U-n : n is an element of N} of non-empty open subsets of X, one can choose a point x(n) is an element of U-n for every n is an element of N in such a way that the sequence {x(n) : n is an element of N} has a convergent subsequence. Let G be a group from one of the following three classes: (i) V-free groups, where V is an arbitrary variety of Abelian groups; (ii) torsion Abelian groups; (iii) torsion free Abelian groups. Under the Singular Cardinal Hypothesis SCH, we prove that if G admits a pseudocompact group topology, then it can also be equipped with a selectively sequentially pseudocompact group topology. Since selectively sequentially pseudocompact spaces are strongly pseudocompact in the sense of Garcia-Ferreira and Ortiz-Castillo, this provides a strong positive (albeit partial) answer to a question of Garcia-Ferreira and Tomita. (C) 2017 Elsevier B.V. All rights reserved.

Link information
DOI
https://doi.org/10.1016/j.topol.2017.08.020
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000413130900045&DestApp=WOS_CPL
ID information
  • DOI : 10.1016/j.topol.2017.08.020
  • ISSN : 0166-8641
  • eISSN : 1879-3207
  • Web of Science ID : WOS:000413130900045

Export
BibTeX RIS