共查询到17条相似文献,搜索用时 109 毫秒
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正则左S-系是von neumann正则半群的自然推广,逆左S-系是逆半群的自然扩广,作为左逆半群的自然推广,本文引入了L-逆左系的概念,并用来刻画了几类幺半群,如左逆幺半群,逆幺半群,adequate幺半群等。 相似文献
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弱Hopf代数与正则幺半群 总被引:1,自引:0,他引:1
本文定义了弱Hopf代数并研究了弱Hopf代数的弱对极与类群元幺半群的关系.首先,本文给出弱Hopf代数的一些基本性质;然后,对类群元幺半群是逆半群或纯正半群的某些弱Hopf代数,描述了其弱对极的一些性质;最后,给出一类其类群元幺半群为正则半群的弱Hopf代数. 相似文献
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正则左S-系是von Neumann正则半群的自然推广,逆左S-系是逆半群的自然推广.作为左逆半群的自然推广,本文引入了L-逆左系的概念,并用来刻画了几类幺半群,如左逆幺半群,逆幺半群,adequate幺半群等. 相似文献
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左C—wrpp半群的左交错积结构 总被引:2,自引:1,他引:1
本文研究左C-wrpp半群的左交错积结构.利用半群的左交错积,获得了任意左C-wrpp半群都可用左正则带和R-左消幺半群的强半格的左交错积来构造的结构,并给出了具有左交错积结构的左C-wrpp半群的一些性质. 相似文献
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本文研究图及其强自同态幺半群.首先刻画了图的强自同态幺半群的正则元,然后给出了此幺半群正则的充要条件.这推广了[1]和[2]中关于有限图的强自同态幺半群正则的结果. 相似文献
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An element of a semigroup S is called irreducible if it cannot be expressed as a product of two elements in S both distinct from itself. In this paper we show that the class C of all completely regular... 相似文献
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We study another structure of so-called left C-wrpp semigroups. In particular, the concept of left △-product is extended and enriched. The aim of this paper is to give a construction of left C-wrpp semigroups by a left regular band and a strong semilattice of left-R cancellative monoids. Properties of left C-wrpp semigroups endowed with left △-products are particularly investigated. 相似文献
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本论文考虑了所有强平坦右S-系是正则系的幺半群的刻画,证明了所有强平坦右S-系是正则S-系当且仅当S是右PSF幺半群并且S的每一个左coilpasible子幺半群包含左零元.该结果对Kilp和Knauer在文献[7]中的问题给出了一个新的回答. 相似文献
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Abundant Left C-lpp Proper Semigroups 总被引:2,自引:0,他引:2
Xiaojiang Guo 《Southeast Asian Bulletin of Mathematics》2000,24(1):41-50
The aim of this paper is to study a class of left abundant semigroups, so-called abundant left C-lpp proper semigroups including left type A proper semigroups and right inverse proper semigroups as its subclasses. A structure theorem similar to McAlisters for inverse proper semigroups is obtained. As its application, it is verified that any abundant left C-lpp proper semigroup can be embedded into a semidirect product of a left regular band by a cancellative monoid.AMS Subject Classification (1991): 20M10Suppoted by the Foundation of Yunnan University and also by the Director Foundation of Yunnan Province. 相似文献
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给出了两个幺半群的半直积及圈积为右(左)逆半群的充分必要条件,从而推广了[2]中两个幺半群的半幺直积和圈积为逆半群的充分必要条件. 相似文献