摘要
用完全正则半群上的一些偏序关系刻画密码群和正规密码群 .证明了完全正则半群S是密码群当且仅当S =≤而S是正规密码群当且仅当C=S .
The purpose of this paper is to characterize cryptogroups and normal cryptogroups by some partial order relations. It is proved that a completely regular semigroup S is a cryptogroup if and only if S=≤ and S is a normal cryptogroup if and only if C= S.
关键词
完全正则半群
偏序
密码群
正规密码群
completely regular semigroup
partial order
cryptogroup
normal cryptogroup
