Results 91 to 100 of about 503,923 (219)

On finite semigroups for which the inverse monoid of local automorphisms is a congruence-permutable semigroup [PDF]

, 2018
В даній доповіді ми подаємо короткий огляд результатів щодо класифікації скінченних напівгруп, для яких інверсний моноїд локальних автоморфізмів є конгруенц-переставним.In the current report, we present a brief review of results about of the classi ...
Derech, V. D., Дереч, В. Д.
core   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

SEMILATTICE OF BISIMPLE INVERSE SEMIGROUPS

The Quarterly Journal of Mathematics, 1971
The purpose of this paper is to give a structure for a semigroup which is a semilattice of bisimple inverse semigroups and satisfies certain conditions. For such a semigroup, we characterize the idempotent separating congruences.
openaire   +2 more sources

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  

D-inverse constellations [PDF]

Categories and General Algebraic Structures with Applications
Constellations are partial algebras in the sense that they possess a partial product, and a unary operation modelling domain.  They were first used to give an ESN-style theorem for left restriction semigroups in terms of so-called inductive ...
Victoria Gould, Timothy Stokes
doaj   +1 more source

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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An analogue of Bernside's lemma for finite inverse symmetric semigroup

Karpatsʹkì Matematičnì Publìkacìï, 2010
An analogue of Bernside's lemma for transitive permutation representations of finite inverse symmetric semigroup is obtained.
Voloshyna T.V.
doaj  

Non-commutative finite monoids of a given order n ≥ 4

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2014
For a given integer n=p1α1p2α2⋯pkαk$n = p_1^{\alpha _1 } p_2^{\alpha _2 } \cdots p_k^{\alpha _k }$ (k ≥ 2), we give here a class of finitely presented finite monoids of order n. Indeed the monoids Mon(π), where π=〈a1,a2,…,ak|aipiαi=ai, (i=1,2,…,k),aiai+
Ahmadi B., Campbell C.M., Doostie H.
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The Booleanization of an inverse semigroup

, 2020
We prove that the forgetful functor from the category of Boolean inverse semigroups to the category of inverse semigroups with zero has a left adjoint. This left adjoint is what we term the ‘Booleanization’.
Lawson, Mark V.
core   +1 more source