Results 81 to 90 of about 891,199 (161)

Free locally inverse *-semigroups [PDF]

Czechoslovak Mathematical Journal, 1993
Let \((S,.)\) be a semigroup endowed with an additional unary operation \(x \to x^*\) satisfying: 1) \((xy)^* = y^*x^*\), 2) \((x^*)^* = x\), 3) \(xx^*x = x\). Then \((S,.,*)\) is called a regular \(*\)-semigroup. If in addition \((S,.,*)\) is locally inverse, i.e. each local submonoid \(eSe\) \((e \in E_ S)\) of \((S,.,*)\) is inverse, then \(S\) is a
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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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Metrics on doubles as an inverse semigroup II

, 2021
V. Manuilov
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The Regular Part of a Semigroup of Full Transformations with Restricted Range: Maximal Inverse Subsemigroups and Maximal Regular Subsemigroups of Its Ideals

International Journal of Mathematics and Mathematical Sciences, 2018
Let TX be the full transformation semigroup on a set X. For a fixed nonempty subset Y of a set X, let TX,Y be the semigroup consisting of all full transformations from X into Y.
Worachead Sommanee
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Commutant properties of w-core inverses

Kuwait Journal of Science
In this paper, we investigate commutant properties of the w-core inverse in a ∗-semigroup. Among these, it is shown that [Figure presented] if and only if a is equal projection (EP) with [Figure presented], where a and w are elements of a ∗-semigroup. As
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Studio di una classe notevole di anelli dotata di inverso generalizzato

Le Matematiche, 2008
We study a remarkable class of rings, which we call corpids, that is the rings, different from zero, (K;+; .); such that (K; .) is an inverse semi-group (or groupid, which is the name given by G. Tallini [4]).
Maria Scafati Tallini, Maurizio Iurlo
doaj  

On Maximal Subsemigroups of Partial Baer-Levi Semigroups

International Journal of Mathematics and Mathematical Sciences, 2011
Suppose that X is an infinite set with |X|≥q≥ℵ0 and I(X) is the symmetric inverse semigroup defined on X. In 1984, Levi and Wood determined a class of maximal subsemigroups MA (using certain subsets A of X) of the Baer-Levi semigroup BL(q)={α∈I(X): dom α=
Boorapa Singha, Jintana Sanwong
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On inverse submonoids of the monoid of almost monotone injective co-finite partial selfmaps of positive integers

Karpatsʹkì Matematičnì Publìkacìï, 2019
In this paper we study submonoids of the monoid $\mathscr{I}_{\infty}^{\,\Rsh\!\!\nearrow}(\mathbb{N})$ of almost monotone injective co-finite partial selfmaps of positive integers $\mathbb{N}$.
O.V. Gutik, A.S. Savchuk
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Free Strict Inverse Semigroups

Journal of Algebra, 1993
An inverse semigroup is ``strict'' if it is a subdirect product of Brandt semigroups and groups. Strict inverse semigroups form a variety of inverse semigroups. Other than the varieties of Clifford semigroups, its subvarieties are those of the form \({\mathbf H}\vee{\mathbf B}\), where \(\mathbf H\) is some variety of groups and \(\mathbf B\) is the ...
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Inversions of Hermite Semigroup [PDF]

Proceedings of the American Mathematical Society, 1993
Let { e − c H | c ⩾ 0 } \{ {e^{ - cH}}|c \geqslant 0\} be the Hermite semigroup on the real line R \mathbb {R} . Then a representation is constructed
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