Results 21 to 30 of about 19,208 (202)
Unary enhancements of inherently nonfinitely based semigroups [PDF]
, 2013 We exhibit a simple condition under which a finite involutary semigroup whose semigroup reduct is inherently nonfinitely based is also inherently nonfinitely based as a unary semigroup.
Auinger, Karl +3 more
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Ordered semigroups characterized by (ϵ ϵ vqk)-fuzzy generalized bi-ideals [PDF]
, 2012 In this paper, we introduce a considerable machinery that permits us to characterize a number of special (fuzzy) subsets in ordered semigroups. In this regard, we generalize (Davvaz and Khan in Inform Sci 181:1759-1770 2011) and define (is an element of,
Khan, Asghar +3 more
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On Regular Semigroups and Their Multiplication [PDF]
Transactions of the American Mathematical Society, 1974 A method is given for the construction of regular semigroups in terms of groups and partially ordered sets. This describes any regular semigroup S and its multiplication by means of triples ( i , g , λ ) \left ( {i,\,g,\,\lambda } \right ) with
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On varieties of regular $*$-semigroups [PDF]
Czechoslovak Mathematical Journal, 1991 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Regular and Intra-Regular Semigroups in Terms of m-Polar Fuzzy Environment
Mathematics, 2021 The central objective of the proposed work in this research is to introduce the innovative concept of an m-polar fuzzy set (m-PFS) in semigroups, that is, the expansion of bipolar fuzzy set (BFS).
Shahida Bashir +3 more
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Nuclearity of semigroup C*-algebras and the connection to amenability [PDF]
, 2012 We study C*-algebras associated with subsemigroups of groups. For a large class of such semigroups including positive cones in quasi-lattice ordered groups and left Ore semigroups, we describe the corresponding semigroup C*-algebras as C*-algebras of ...
Li, Xin
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𝒩-Fuzzy Ideals in Ordered Semigroups
International Journal of Mathematics and Mathematical Sciences, 2009 We introduce the concept of 𝒩-fuzzy left (right) ideals in ordered semigroups and characterize ordered semigroups in terms of 𝒩-fuzzy left (right) ideals. We characterize left regular (right regular) and left simple (right simple) ordered
Asghar Khan +2 more
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On regularity preservation in a semigroup [PDF]
Bulletin of the Australian Mathematical Society, 2004 We consider certain subsets of a semigroupS, defined mainly by conditions involving regularity preservation. In particular, theregular baseB(S) ofSmay be regarded as a generalisation of the zero ideal in a semigroup with zero; if it non-empty thenSisE-inversive. The other subsets considered are related in a natural way either to B(S) or to the set RP(S)
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Covers for regular semigroups and an application to complexity [PDF]
, 1943 A major result of D.B. McAlister for inverse semigroups is generalised in the paper to classes of regular semigroups, including the class of all regular semigroups.
Trotter, P.G.
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Algebras of right ample semigroups
Open Mathematics, 2018 Strict RA semigroups are common generalizations of ample semigroups and inverse semigroups. The aim of this paper is to study algebras of strict RA semigroups.
Guo Junying, Guo Xiaojiang
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