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On products of self-small abelian groups

Publikace na Matematicko-fyzikální fakulta |
2015

Tento text není v aktuálním jazyce dostupný. Zobrazuje se verze "en".Abstrakt

An abelian group A is called self-small if direct sums of copies of A commute with the covariant Hom(A;) functor. The paper presents an elementary example of a non-self-small countable product of self-small abelian groups without non-zero homomorphisms between dierent ones.