A class of groups in which all unconditionally closed sets are algebraic
نویسندگان
چکیده
منابع مشابه
Reflection principle characterizing groups in which unconditionally closed sets are algebraic
We give a necessary and sufficient condition, in terms of a certain reflection principle, for every unconditionally closed subset of a group G to be algebraic. As a corollary, we prove that this is always the case when G is a direct product of an Abelian group with a direct product (sometimes also called a direct sum) of a family of countable groups. This is the widest class of groups known to ...
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ژورنال
عنوان ژورنال: Journal of Mathematical Sciences
سال: 2008
ISSN: 1072-3374,1573-8795
DOI: 10.1007/s10958-008-9055-x