Results 71 to 80 of about 1,361 (185)

Equational theories of semigroups with involution

open access: yesJournal of Algebra, 2012
The paper deals with finite basis problem for classes of partition semigroups considered as involutary semigroups. A number of interesting results are obtained. The technique relies on a subtle analysis of the structure of the semigroups under consideration as well as on the results of a previous paper by the same authors [J. Eur. Math. Soc. (JEMS) 14,
Auinger, Karl   +2 more
openaire   +3 more sources

Spectral Distribution of Transport Operator Arising in Growing Cell Populations

open access: yesJournal 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
doaj   +1 more source

On the Approximate Controllability of Fractional Evolution Equations with Generalized Riemann-Liouville Fractional Derivative

open access: yesJournal 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
doaj   +1 more source

Some remarks on the domination between conjunctions and disjunctions

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2007
There are diverse domination properties considered in linear programming, game theory, semigroup theory and graph theory. In this paper we present a class of conjunctions which dominate each triangular conorm.
Paweł Drygaś, Anna Król
doaj  

Stability of coupled systems

open access: yesAbstract and Applied Analysis, 1996
The exponential and asymptotic stability are studied for certain coupled systems involving unbounded linear operators and linear infinitesimal semigroup generators.
Farid Ammar Khodja   +2 more
doaj   +1 more source

New Study on the Controllability of Non-Instantaneous Impulsive Hilfer Fractional Neutral Stochastic Evolution Equations with Non-Dense Domain

open access: yesFractal and Fractional
The purpose of this work is to investigate the controllability of non-instantaneous impulsive (NII) Hilfer fractional (HF) neutral stochastic evolution equations with a non-dense domain. We construct a new set of adequate assumptions for the existence of
Gunasekaran Gokul   +4 more
doaj   +1 more source

Ideals and Green's relations in ordered semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
Exactly as in semigroups, Green's relations play an important role in the theory of ordered semigroups—especially for decompositions of such semigroups.
Niovi Kehayopulu
doaj   +1 more source

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