Results 111 to 120 of about 354,394 (221)
Small doubling in ordered semigroups [PDF]
Semigroup Forum, 2014 To appear in Semigroup Forum.
openaire +2 more sources
International Journal of Mathematics and Mathematical Sciences, 2011 It has been well known that the band of idempotents of a naturally ordered orthodox semigroup satisfying the “strong Dubreil-Jacotin condition” forms a normal band.
Shouxu Du, Xinzhai Xu, K. P. Shum
doaj +1 more source
Finite groups are big as semigroups [PDF]
, 2011 We prove that a finite group G occurs as a maximal proper subsemigroup of an infinite semigroup (in the terminology of Freese, Ježek, and Nation, G is a big semigroup) if and only if |G| ≥ 3.
Ruskuc, Nik +3 more
core +1 more source
Positive Solutions for the Initial Value Problems of Fractional Evolution Equation
Journal of Function Spaces and Applications, 2013 This paper discusses the existence of positive solutions for the initial value problem of fractional evolution equation with noncompact semigroup , ; in a Banach space , where denotes the Caputo fractional derivative of order , is a closed linear ...
Yue Liang, Yu Ma, Xiaoyan Gao
doaj +1 more source
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
core +1 more source
Semigroup models for biochemical reaction networks. [PDF]
J Math Biol, 2023 Loutchko D.
europepmc +1 more source
On Weakly Commutative Ordered Semigroups
Semigroup Forum, 1998 A partially ordered semigroup \((S, \cdot, \leq)\) is ``weakly commutative'' if for all \(a,b \in S\) there exist \(x\in S\) and a nonnegative integer \(n\) such that \((ab)^n \leq bxa\). It is ``archimedean'' if for all \(a,b\in S\) there exist \(x,y\in S\) and \(m\) such that \(a^m\leq xby\). It was shown by \textit{N.
Kehayopulu, N, Tsingelis, M
openaire +2 more sources
Geometric grid classes of permutations [PDF]
, 2012 A geometric grid class consists of those permutations that can be drawn on a specified set of line segments of slope ±1 arranged in a rectangular pattern governed by a matrix.
Atkinson, M.D. +8 more
core +1 more source
An algebraic characterization of self-generating chemical reaction networks using semigroup models. [PDF]
J Math Biol, 2023 Loutchko D.
europepmc +1 more source