Results 111 to 120 of about 1,010,344 (260)
On (m, n)-ideals and (m, n)-regular ordered semigroups [PDF]
Let m, n be non-negative integers. A subsemigroup A of an ordered semigroup (S, , is called an (m, n)-ideal of S if (i) Am SAn A, and (ii) if x A, y S such that y x, then y A. In this paper, necessary and sufficient conditions for every (
Limpapat Bussaban, Thawhat Changphas
doaj
On regular semigroups II: An embedding
The core (a word suggested by Mario Petrich) of any regular semigroup S is the subsemigroup of S generated by E(S), where E(S) is the set of idempotents of S. For each \(e\in E(S)\) by \(\prec e\succ\) is denoted the core of the regular subsemigroup eSe. The main result is the following Theorem I.
openaire +2 more sources
Semigroup actions on posets and preimage quasi-orders
Structures consisting of a semigroup of (partial) functions on a set X, a poset of subsets of X, and a preimage operation linking the two, arise commonly throughout mathematics.
Stokes, Tim E.
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A multiplication of e-varieties of regular $E$-solid semigroups by inverse semigroup varieties [PDF]
summary:A multiplication of e-varieties of regular $E$-solid semigroups by inverse semigroup varieties is described both semantically and syntactically.
Kuřil, Martin
core +1 more source
Global determinism of completely regular semigroups [PDF]
Baomin Yu, Xianzhong Zhao
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THE ANALOGUE OF WEIGHTED GROUP ALGEBRA FOR SEMITOPOLOGICAL SEMIGROUPS [PDF]
In [1,2,3], A. C. Baker and J.W. Baker studied the subspace Ma(S) of the convolution measure algebra M, (S) of a locally compact semigroup. H. Dzinotyiweyi in [5,7] considers an analogous measure space on a large class of C-distinguished topological ...
doaj
Projection algebras and free projection- and idempotent-generated regular ⁎-semigroups [PDF]
James East +3 more
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We study left regular bands using the adjacency graph of chambers, labeled by facets. In particular, we define a particular family of left regular bands which we call thin MC left regular bands whose face poset is a meet-semilattice and whose adjacency ...
Dermenjian, Aram
core +1 more source
Flows, skew pairs and partial flows in regular semigroups [PDF]
Suha Wazzan, David A. Oluyori
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