Results 101 to 110 of about 354,394 (221)

Maximal subgroups of free idempotent-generated semigroups over the full transformation monoid [PDF]

open access: yes, 2011
Let Tn be the full transformation semigroup of all mappings from the set {1, . . . , n} to itself under composition. Let E = E(Tn) denote the set of idempotents of Tn and let e ∈ E be an arbitrary idempotent satisfying |im (e)| = r ≤ n − 2. We prove that
Ruskuc, N.   +3 more
core   +1 more source

On representable ordered residuated semigroups [PDF]

open access: yesLogic Journal of IGPL, 2010
We show that the equational theory of representable lattice-ordered residuated semigroups is not finitely axiomatizable. We apply this result to the problem of completeness of substructural logics.
openaire   +1 more source

Higher representation stability for ordered configuration spaces

open access: yesJournal of Topology, Volume 19, Issue 3, September 2026.
Abstract Using factorization homology with coefficients in twisted commutative algebras (TCAs), we prove two flavors of higher representation stability for the cohomology of (generalized) configuration spaces of a scheme/topological space X$X$. First, we provide an iterative procedure to study higher representation stability using actions coming from ...
Quoc P. Ho
wiley   +1 more source

Positive implicative ordered filters of implicative semigroups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
We introduce the notion of positive implicative ordered filters in implicative semigroups. We show that every positive implicative ordered filter is both an ordered filter and an implicative ordered filter.
Young Bae Jun, Kyung Ho Kim
doaj   +1 more source

Monotone iterative technique for nonlocal fractional differential equations with finite delay in Banach space

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
In this paper, we extend a monotone iterative technique for nonlocal fractional differential equations with finite delay in an ordered Banach space. By using the monotone iterative technique, theory of fractional calculus, semigroup theory and measure of
Kamal Jeet, Dhirendra Bahuguna
doaj   +1 more source

A new semigroup technique in poisson approximation [PDF]

open access: yes, 1989
Publisher's, offprint versionWe present a unified and self-contained approach to Poisson approximation problems for independent Bernoulli summands with respect to several metrics by a general semigroup technique, expanding and completing earlier work on ...
Pfeifer, Dietmar   +2 more
core   +1 more source

Concave Soft Sets, Critical Soft Points, and Union-Soft Ideals of Ordered Semigroups

open access: yesThe Scientific World Journal, 2014
The notions of union-soft semigroups, union-soft l-ideals, and union-soft r-ideals are introduced, and related properties are investigated. Characterizations of a union-soft semigroup, a union-soft l-ideal, and a union-soft r-ideal are provided.
Young Bae Jun   +2 more
doaj   +1 more source

The Archimedean property in an ordered semigroup [PDF]

open access: yesJournal of the Australian Mathematical Society, 1968
By an ordered semigroup we mean a semigroup with a simple order which is compatible with the semigroup operation. Several authors, for example Alimov [1], Clifford [2], Conrad [4] and Hion [7], studied the archimedean property in some special kinds of ordered semigroups.
openaire   +2 more sources

A note on primes of the form a2 + 1 [PDF]

open access: yes, 2007
In this note I prove using an algebraic identity and Wilson's ...
Gonzalez, Juan Lopez
core   +1 more source

Weakly Semiprime Segments in Ordered Semigroups

open access: yesMathematics, 2019
Let P 2 ⊂ P 1 be a pair of weakly semiprime ideals of an ordered semigroup ( S , · , ≤ ) . Then, the pair P 2 ⊂ P 1 is called a weakly semiprime segment of S if ⋂ n ∈ N I n ⊆ P 2
Panuwat Luangchaisri, Thawhat Changphas
doaj   +1 more source

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