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Embedding the bicyclic semigroup into countably compact topological semigroups

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 Added by Taras Banakh
 Publication date 2010
  fields
and research's language is English




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We study algebraic and topological properties of topological semigroups containing a copy of the bicyclic semigroup C(p,q). We prove that each topological semigroup S with pseudocompact square contains no dense copy of C(p,q). On the other hand, we construct a (consistent) example of a pseudocompact (countably compact) Tychonov semigroup containing a copy of C(p,q).



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