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一类α-半群的相容格

A suitable lattice of a kind of α-semigroups
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摘要 设TX是集合X上的全变换半群,E是X上的等价关系,则TE(X)={f∈TX∶(a,b)∈E,(f(a),f(b))∈E}是α-半群.设X是全序集,OE(X)={f∈TE(X)∶x,y∈X,x≤y f(x)≤f(y)}是TE(X)的α-子半群.对于ω-型全序集X上的凸等价关系E,F,确定了OE(X)和O(X)=OE(X)∩OF(X)的相容格. Let T be the full transformation semigroup on a set X and E be an equivalence on X, then TE (X) = {f∈TX: axbitary (a, b) ∈E, (f (a), f (b)) ∈E} is an α-semigroup. Foratotallyorderedset X, OE (X) = {f∈TE(X):axbitary x,Y∈X,x≤y→(x)≤f(y)} ia an α-subsemigroup of TE (x). In this paper, for two convex equivalences E, F on the ω -type totally ordered set X, the suitable lattices of the α -semigroups OE (X) and O (X) =OE: (X) ∩OF (X) are determined.
作者 孙垒 耿世佼
出处 《河南理工大学学报(自然科学版)》 CAS 2009年第4期536-539,共4页 Journal of Henan Polytechnic University(Natural Science)
基金 河南省自然科学基金资助项目(0511010200) 河南省教育厅自然科学研究计划项目(2009A110007) 河南理工大学博士基金资助项目(B2009-56)
关键词 α-半群 全序集 保序映射 相容格 α -semigroup totally ordered set order- preserving map suitable lattice
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参考文献6

  • 1HOWIE J M. Fundamentals of Semigroup Theory [ M]. OxFord: Oxford University Press, 1995.
  • 2HOFMANN KH, MAGILL JR. The smallest proper congruence on S (X) [J]. Glasgow Math. J. , 1988, 30:301 -313.
  • 3PCI HUISHCNG. Equivalences, α - congruences [J]. Semigroup Forum, 1994, 49 (1) : 49 -58.
  • 4GRACINDA M S, HOWIE J M. On the ranks of certain semigroups of order - preserving transformations [ J ]. Scmigroup Forum, 1992, 45 (2): 272 -282.
  • 5PEI HUISHENG, ZOU DIGNYU. Green's equivalences on semigroups of transformations preserving order and an equivalence relation [J]. Semigroup Forum, 2005, 71 (2): 241-251.
  • 6SUN LEI, PEI HUISHENG, CHENG ZHENGXING. Regularity and Greens relations for semigroups of transformations preserving orientation and an equivaence [J]. Semigroup Forum, 2007, 74 (3): 473 -486.

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