Results 41 to 50 of about 1,081,899 (283)
On the K-theory of crossed products by automorphic semigroup actions [PDF]
, 2012 Let P be a semigroup that admits an embedding into a group G. Assume that the embedding satisfies a certain Toeplitz condition and that the Baum-Connes conjecture holds for G.
Cuntz, Joachim +2 more
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Computing finite semigroups [PDF]
, 2018 Using a variant of Schreier's Theorem, and the theory of Green's relations, we show how to reduce the computation of an arbitrary subsemigroup of a finite regular semigroup to that of certain associated subgroups.
East, James +3 more
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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
doaj +1 more source
Regularity of Semigroup Rings [PDF]
Proceedings of the American Mathematical Society, 1970 The conditions unlder which a semnigroup ring is regu- lar (in the sense of von Neumann) are inlvestigated. SLufficient con- ditions are obtained in order that the semnigroup ring of an inverse semigroup be regular. Consequences of the regularity of the seni- group ring for the subgroups of the semigroup are established.
openaire +2 more sources
Partial orders in regular semigroups [PDF]
Proyecciones (Antofagasta), 2011 First we have obtained equivalent conditions for a regular semigroup and is equivalent to N = N1 It is observed that every regular semigroup is weakly separative and C ⊆ S and on a completely regular semigroup S ⊆ N and S is partial order . It is also obtained that a band (S, .) is normal iff C = N .
Srinivas, K. V. R, Anasuya, Y. L
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On an equivalence between regular ordered Γ-semigroups and regular ordered semigroups
Open Mathematics, 2020 In this paper, we develop a technique which enables us to obtain several results from the theory of Γ-semigroups as logical implications of their semigroup theoretical analogues.
Çullhaj Fabiana, Krakulli Anjeza
doaj +1 more source
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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The Relationship between E-Semigroups and R-Semigroups
Journal of Mathematics, 2023 A semigroup is called an E-semigroup (R-semigroup) if the set of all idempotents (the set of all regular elements) forms a subsemigroup. In this paper, we introduce the concept of V-semigroups and establish the relationship between the three classes of ...
Ze Gu
doaj +1 more source
Generalized Bi-ideal of Ordered Semigroup Related to Intuitionistic Fuzzy Point [PDF]
Matrix Science Mathematic, 2017 Intuitionistic fuzzy generalized bi-ideals play an important role in the study of ordered semigroups. In this paper, we try obtain more general form of intuitionistic fuzzy generalized bi-ideal of an ordered semigroup.
Hidayat Ullah Khan +3 more
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Two generalizations of homogeneity in groups with applications to regular semigroups [PDF]
, 2012 Let X be a finite set such that |X| = n and let i 6 j 6 n. A group G 6 Sn is said to be (i,j)-homogeneous if for every I,J ⊆ X, such that |I| = i and |J| = j, there exists g ∈ G such that Ig ⊆ J.
J. Ara'ujo, P. Cameron
semanticscholar +1 more source