Results 191 to 200 of about 1,595,421 (249)

On \(\Sigma\)-inverse semigroups

, 1973
openaire   +2 more sources

Hopf bifurcation in an age-structured predator-prey system with Beddington-DeAngelis functional response and constant harvesting. [PDF]

J Math Biol
Wu SX, Wang ZC, Ruan S.
europepmc   +1 more source

On hierarchical competition through reduction of individual growth. [PDF]

J Math Biol
Barril C, Calsina À, Diekmann O, Farkas JZ.   +3 more
europepmc   +1 more source

The Universal Covering of an Inverse Semigroup

Applied Categorical Structures, 2008
Considerable part of the article is devoted to presheaves on a small category. For example, transition injective presheaves (that is, its transition maps are injective) as well as transition bijective presheaves on a small category are described. The results obtained are applied to the category \(L(T)\), \(T\) an inverse semigroup, whose objects are ...
Jonathon Funk, Benjamin Steinberg
openaire   +4 more sources

The Structure of Generalized Inverse Semigroups

Semigroup Forum, 2014
We prove that the structure of right generalized inverse semigroups is determined by free etale actions of inverse semigroups. This leads to a tensor product interpretation of Yamada's classical structure theorem for generalized inverse semigroups.
Mark Verus Lawson, Ganna Kudryavtseva
exaly   +2 more sources

Representations of Inverse Semigroups in Complete Atomistic Inverse Meet-Semigroups

Semigroup Forum, 2020
As an appropriate generalisation of the features of the classical (Schein) theory of representations of inverse semigroups in I , a theory of representations of inverse semigroups by homomorphisms into complete atomistic inverse ∧-semigroups is developed.
Desmond FitzGerald (14736574)
exaly   +1 more source

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SEMIGROUPS WITH INVERSE TRANSVERSALS AS MATRIX SEMIGROUPS

The Quarterly Journal of Mathematics, 1984
Let S be a regular semigroup. An inverse subsemigroup \(S^ 0\) of S is called an inverse transversal for S if \(S^ 0=S^ 0SS^ 0\) and each \(a\in S\) has a unique inverse \(a^ 0\in S^ 0\). We shall only speak about regular semigroups containing an inverse transversal. In a recent paper [ibid.
McAlister, D. B., McFadden, R. B.
openaire   +2 more sources