The G-Exponent of a Pseudovariety of Sem
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A Escada
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Article
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2000
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Elsevier Science
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English
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Ash's proof of the Pointlike Conjecture provides an algorithm for calculating the group-pointlike subsets of a finite semigroup S. We denote by P G S the subsemigroup of P S , the elements of which are the group-pointlike subsets of S. This paper is concerned with some properties of the operator G ,