On algebras of P-Ehresmann semigroups and their associate partial semigroups
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DOI: 10.1007/s00233-017-9903-4
Abstract: P-Ehresmann semigroups are introduced by Jones as a common generalization of Ehresmann semigroups and regular $$*$$∗-semigroups. Ehresmann semigroups and their semigroup algebras are investigated by many authors in literature. In particular, Stein shows that under… read more here.
Keywords: ehresmann semigroups; semigroup algebra; ehresmann; associate partial ... See more keywords
On Extensions of Semigroups and Their Applications to Toeplitz Algebras
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DOI: 10.1134/s1995080219120059
Abstract: The paper deals with the normal extensions of cancellative commutative semigroups and the Toeplitz algebras for those semigroups. By the Toeplitz algebra for a semigroup S one means the reduced semigroup C*-algebra C*(S). We study… read more here.
Keywords: semigroup algebra; semigroup; normal extensions; extensions semigroups ... See more keywords