Invariant semigroups of othodox semigroups.
T.S. Blyth, M.H. Almeida-Santos (1996)
Semigroup forum
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Displaying similar documents to “Four-part semigroups - semigroups of Boolean operations”
Invariant semigroups of othodox semigroups.
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Ze Gu, Xilin Tang (2015)
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In this paper, we give some new characterizations of orthodox semigroups in terms of the set of inverses of idempotents. As a generalization, a new class of regular semigroups, namely Vn-semigroups, is introduced. Also, we give a characterization of Vn-semigroups and investigate some properties of Vn-semigroups. Furthermore, we show that the class of Vn-semigroups is closed under direct products and homomorphic images. However, regular subsemigroups of Vn-semigroups (n ≥ 2) are not necessarily...