Results 111 to 120 of about 360 (139)
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The greatest subgroup of a semigroup in Γ-semigroups
Lobachevskii Journal of Mathematics, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Siripitukdet, M., Julatha, P.
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On d-semigroups, r-semigroups, dr-semigroups and their subclasses
Semigroup Forum, 2022A \textit{d-semigroup} (resp. \textit{r-semigroup}) is a semigroup \((S,\cdot)\) with a unary operation \(x\mapsto x^+\) (resp. \(x\mapsto x^*\)) satisfying the identities \begin{align*} x^+\cdot x &= x,\ (x\cdot y)^+ = (x\cdot y^+)^+.\\ (\text{resp. }x\cdot x^* &= x,\ (y\cdot x)^* = (y^*\cdot x)^*.) \end{align*} \textit{dr-semigroups} are two-sided ...
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On Finite Semigroups Embeddable in Inverse Semigroups
Semigroup Forum, 2001zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Subgroups of the Power Semigroup of a Finite Semigroup
Canadian Journal of Mathematics, 1979Throughout this paper, S will denote a finite semigroup and Z+ the set of positive integers. E = E(S) denotes the set of idempotents of S. Let . If , then let AB = {ab| a ∈ A, b ∈ B}. has been studied by many authors, including [2, 3, 5, 6, 7]. If X is a set, then |X| denotes the cardinality of X. For undefined terms in this paper, see [1,4].THEOREM 1.
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C-semigroups and strongly continuous semigroups
Israel Journal of Mathematics, 1993zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Left (Right) Regular and Transposition Regular Semigroups and Their Structures
Mathematics, 2022Xiaohong Zhang, Yudan Du
exaly
Fuzzy bi-ideals in ordered semigroups
Information Sciences, 2005Niovi Kehayopulu, Michael Tsingelis
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