Results 111 to 120 of about 881 (228)
Concave Soft Sets, Critical Soft Points, and Union-Soft Ideals of Ordered Semigroups
The 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
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Electronic 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
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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
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Certain Partial Orders on Semigroups [PDF]
Czechoslovak Mathematical Journal, 2001 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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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
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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
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TRIANGULAR MATRIX REPRESENTATIONS OF SKEW MONOID RINGS
, 2010 Let R be a ring and S a u.p.-monoid. Assume that there is a monoid homomorphism α : S → Aut (R). Suppose that α is weakly rigid and lR(Ra) is pure as a left ideal of R for every element a ∈ R.
Zhongkui, Liu, Xiaoyan, Yang
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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
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A natural partial order for semigroups [PDF]
Proceedings of the American Mathematical Society, 1986 A partial order on a semigroup ( S , ⋅
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P A ON (m, n)-IDEALS OF AN ORDERED SEMIGROUP
, 2015 : In this paper we introduce the concept of (m, n)-simple ordered semigroups extending the notion of simple ordered semigroups, and prove that an ordered semigroup (S, ·, ≤) does not contain proper (m, n)-ideals if and only if it is both (m, 0)-simple ...
Thawhat Changphas
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