摘要
设X是一个非空集合,E是X上的等价关系,TE(X)={f∈TX∶ (a,b)∈E,(f(a),f(b))∈E}.对于半群S中的一个取定元素θ∈S,重新定义S上的运算 为f g=fθg,其中等式右边表示原来的运算,S关于这个新的运算所成的半群称为S的变种半群.本文讨论了TE(X;θ)的Green关系和Symons同余之间的联系.
Let X be a nonempty set and E be an equivalence on X.LetT_E(X)={f∈T_X∶(a,b)∈E,(f(a),f(b))∈E}. For a fixed element θ in the semigroup S,we redefine an operation of S as fg=fθg,where the right hand of the equation denotes the original operation of the semigroup S.We refer to the semigroup S with respect to the new operation as a variant semigroup of S.In this paper we discuss the connection between Green's relations for T_E(X;θ) and Symons's congruences.
出处
《信阳师范学院学报(自然科学版)》
CAS
2004年第2期129-130,133,共3页
Journal of Xinyang Normal University(Natural Science Edition)
基金
河南省自然科学基金项目(994052900)