Results 111 to 120 of about 15,000 (228)
, 2014 This paper is actually the introduction and the main part of section 2 (: the first decomposition theorem) of the paper by \textit{Š. Schwarz} [Czech. Math. J. 10(85), 201-230 (1960; Zbl 0098.01602)] ([10] in the References of the paper). Some results in the introduction are stated without proof in the paper by Schwarz.
Changphas, T., Phaipong, N.
openaire +2 more sources
Undecidability of representability for lattice-ordered semigroups and ordered complemented semigroups [PDF]
, 2015 Murray Neuzerling
openalex +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
Weakly Semiprime Segments in Ordered Semigroups
Mathematics, 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
An algebraic characterization of self-generating chemical reaction networks using semigroup models. [PDF]
J Math Biol, 2023 Loutchko D.
europepmc +1 more source
PARTIALLY ORDERED ABELIAN SEMIGROUPS. III ON THE REVERSIBLE PARTIAL ORDER DEFINED ON AN ABELIAN SEMIGROUP [PDF]
, 1960 Osamu Nakada
openalex +1 more source
On certain lattice—Ordered semigroups
Semigroup Forum, 1985 The aim of this paper is the introduction and the initial study of a lattice-ordered semigroup S which satisfies \(ab=(a\vee b)(a\wedge b)\) for all a,b\(\in S\). This axiom is of course a well-known theorem of the classical theory of divisibility over commutative and cancellative semigroups.
Ciobanu, G., Deaconescu, M.
openaire +1 more source
On Intra-regular Ordered Semigroups
Semigroup Forum, 1998 An ordered semigroup \(S\) is intra-regular if and only if it is a semilattice of simple semigroups, equivalently, if \(S\) is a union of simple subsemigroups of \(S\) [\textit{N. Kehayopulu}, Semigroup Forum 46, 271-278 (1993; Zbl 0776.06013)]. A \(poe\)-semigroup \(S\) is a semilattice of simple semigroups if and only if it is a semilattice of simple
Kehayopulu, N, Tsingelis, M
openaire +3 more sources
(λ,μ)-Fuzzy Version of Ideals, Interior Ideals, Quasi-Ideals, and Bi-Ideals
Journal of Applied Mathematics, 2012 We introduced (λ,μ)-fuzzy ideals, (λ,μ)-fuzzy interior ideals, (λ,μ)-fuzzy quasi-ideals, and (λ,μ)-fuzzy bi-ideals of an ordered semigroup and studied them. When λ=0 and μ=1, we meet the ordinary fuzzy ones.
Yuming Feng, P. Corsini
doaj +1 more source