共查询到20条相似文献,搜索用时 46 毫秒
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将直觉模糊软集的概念与半环理论相结合,给出了半环的一种有边界值的直觉模糊软h-左理想的概念,对其部分性质进行了探讨,并利用有边界值的直觉模糊软h-左理想,对h-左正则半环的刻画问题进行了讨论. 相似文献
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给出了半群中直觉模糊拟理想的等价定义,研究了半群中直觉模糊拟理想的若干性质和刻画,并用直觉模糊拟理想刻画群,完全正则半群和群半格. 相似文献
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给出半群的模糊n伪理想,广义模糊n伪理想,(∈,∈∨q(λ,μ))-模糊n伪理想的定义,同时讨论了(∈,∈∨q(λ,μ))-模糊n伪左理想(右理想,理想)和广义模糊n伪左理想(右理想,理想)的等价刻画.还利用半群的广义模糊子系统来刻画Drazin半群的结构. 相似文献
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杨京开 《数学的实践与认识》2013,43(10)
提出了直觉模糊变换半群的(全)直积,圈积,直觉模糊变换半群的覆盖的定义,利用代数的手段讨论了直觉模糊变换半群的积的结合性质,研究了直觉模糊变换半群的积的覆盖关系. 相似文献
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h-半正则广义直觉模糊duo半环 总被引:1,自引:1,他引:0
通过在半环上引入具有边界值的直觉模糊h-理想和h-双理想,给出了一种广义直觉模糊duo半环,并在半环满足h-半正则性的前提下,对广义直觉模糊duo半环的性质进行了讨论. 相似文献
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A Generalization of Regular Left Acts 总被引:1,自引:0,他引:1
Liu Zhongkui 《东北数学》1997,(2)
AGeneralizationofRegularLeftActs*)LiuZhongkui(刘仲奎)(DepartmentofMathematics,NorthwestNormalUniversity,Lanzhou,730070)J.Ahsan(D... 相似文献
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In this paper, we define intuitionistic fuzzy generalized bi-ideals in ordered semigroups and characterize regular and left weakly regular ordered semigroups in terms of intuitionistic fuzzy generalized bi-ideals. 相似文献
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CharacterizationofInverseandLeftInverseSemigroupsbyTheirS1┐acts*)LiuZhongkui(刘仲奎)(DepartmentofMathematics,NorthwestNormalUniv... 相似文献
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A proper ideal M of an ordered semigroup (S, ·, ≤) is said to be a covered ideal of S if M ? (S(S?M)S], i.e., if for any x in M, there exist a, c in S and b in S?M such that x ≤ abc. The purpose of this article is to study the structure of ordered semigroups containing covered ideals. The results obtained generalize the results on semigroups (without order) studied by Fabrici in 1984. 相似文献
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《Optimization》2012,61(5):787-814
We consider Travelling Salesman Problems (TSPs) where the cost of a tour is an algebraic composition of the cost coefficients that are elements of a totally ordered, commutative semigroup. Conditions for the cost matrix are stated which allow to solve these problems in polynomial time. In particular, we investigate conditions which guarantee that an optimal tour is pyramidal and can therefore be determined in O(n 2) time. Furthermore, we discuss TSPs with Brownian as well as those with left-upper-triangular cost matrices. 相似文献
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We study morphisms in varieties of ordered universal algebras. We prove that (i) monomorphisms are precisely the injective homomorphisms and that (ii) every regular monomorphism is an order embedding, but the converse is not true in general. We also give a necessary and sufficient condition for a morphism to be a regular epimorphism. Finally, we discuss factorizations in such varieties. 相似文献