Results 101 to 110 of about 5,376,972 (220)
Theory of decomposition in semigroups
Advances in Mathematics, 1985 Let S be an Abelian Hausdorff topological semigroup with a unit element e. The authors call S Hungarian if (i) S is first countable, (ii) the set of associates of any element x (a is an associate of b, \(a\sim b\), if \(a=bc\) and \(b=ad\) for some c,d) is closed, (iii) the set of divisors of any element of the factor semigroup \(S^*(=S/\sim)\) is a ...
Ruzsa, Imre Z, Székely, Gábor J
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Neutrosophic LA-Semigroup Rings [PDF]
, 2015 Neutrosophic LA-semigroup is a midway structure between a neutrosophic groupoid and a commutative neutrosophic semigroup. Rings are the old concept in algebraic structures.
Shabir, Muhammad +7 more
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The semigroup of combinatorial configurations
, 2011 We elaborate on the existence and construction of the so-called combinatorial configurations. The main result is that for fixed degrees the existence of such configurations is given by a numerical semigroup.
Bras-Amorós, Maria, +3 more
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The Bergman property for semigroups [PDF]
, 2009 In this article, we study the Bergman property for semigroups and the associated notions of cofinality and strong cofinality. A large part of the paper is devoted to determining when the Bergman property, and the values of the cofinality and strong ...
Ruskuc, N. +7 more
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Spectral Distribution of Transport Operator Arising in Growing Cell Populations
Journal of Function Spaces, 2014 Transport equation with partly smooth boundary conditions arising in growing cell populations is studied in Lp ...
Hongxing Wu, Shenghua Wang, Dengbin Yuan
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CoRR, 2011 Geometric semigroup theory is the systematic investigation of finitely-generated semigroups using the topology and geometry of their associated automata. In this article we show how a number of easily-defined expansions on finite semigroups and automata lead to simplifications of the graphs on which the corresponding finite semigroups act.
Jon McCammond +2 more
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Time-reversal invariance and irreversibility in time-asymmetric quantum mechanics [PDF]
, 2005 The aim of this paper is to analyze the concepts of time-reversal invariance and irreversibility in the so-called 'time-asymmetric quantum mechanics'. We begin with pointing out the difference between these two concepts.
Castagnino, Mario +5 more
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Subsemigroups of virtually free groups : finite Malcev presentations and testing for freeness [PDF]
, 2006 This paper shows that, given a finite subset X of a finitely generated virtually free group F, the freeness of the subsemigroup of F generated by X can be tested algorithmically. (A group is virtually free if it contains a free subgroup of finite index.)
Robertson, Edmund Frederick +2 more
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Journal of Function Spaces, 2015 We discuss the approximate controllability of fractional evolution equations involving generalized Riemann-Liouville fractional derivative. The results are obtained with the help of the theory of fractional calculus, semigroup theory, and the Schauder ...
N. I. Mahmudov, M. A. McKibben
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Semigroup actions on posets and preimage quasi-orders
, 2012 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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