摘要
设Λ是任意的非空集合,Γ是集合Λ上的半格,半群PΓ(Λ×Λ)是由集合Λ上的半格Γ确定的二元关系半群。利用半格的性质,获得了半群PΓ(Λ×Λ)的幂等元性质,并且构造出了一类幂等元,并刻画了它的左单位元。
Let Λ be an arbitrary nonempty set, and Γ be a semilattice on the set Λ, semigroup PΓ(Λ×Λ) is a semigroup of binary relations determined by the semilattice Γ on the set Λ. Use of the nature of the semilattice,characteristics of idempotents of the semigroup PΓ(Λ×Λ) are obtained,and a class of idempotents is constructed; Finally, left units of the semigroup PΓ(Λ×Λ) are characterized.
出处
《山东大学学报(理学版)》
CAS
CSCD
北大核心
2013年第8期36-40,共5页
Journal of Shandong University(Natural Science)
基金
中央高校基本科研业务费专项项目(12NZYQN29
12NZYTD21)
关键词
二元关系半群
幂等元
左单位元
semigroup of binary relations
idempotents
left units