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Varieties generated by countably compact Abelian groups
Authors:Dikran Dikranjan   Michael Tkachenko
Affiliation:Dipartimento di Matematica e Informatica, Università di Udine, Via delle Scienze 206, 33100 Udine, Italy ; Departamento de Matemáticas, Universidad Autónoma Metropolitana, México
Abstract:We prove under the assumption of Martin's Axiom that every precompact Abelian group of size $leq 2^{aleph_0}$ belongs to the smallest class of groups that contains all Abelian countably compact groups and is closed under direct products, taking closed subgroups and continuous isomorphic images.

Keywords:Countably compact   precompact   sequentially complete   variety of topological groups   Martin's Axiom
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