P-完全正则半群

求证具有强半格结构的完全正则半群成为P-完全正则半群的充分条件.利用半群的强半格结构以及同余的性质.完全单半群的强半格-正规群带是P-完全正则半群.矩形群的强半格正规纯正群类ONBG,左群的强半格左正规纯整群类LONBG,群的强半格Clifford半群类,矩形带的强半格正规带类NB,都具有性质P.     

正则交半群

进一步研究了正则交半群，引入了纯下在交半群的概念，分别给出了完全正则半群为正则交半群与正交半群的刻划。     

拟正则半群上的完全正则同余

拟正则半群上的两个完全正则同余相等当且仅当它们的核正规系相同。更进一步地,我们还可建立一个从一个拟正半群上的全体完全正则同余的集合到这个半群的所有完全正则核正规系的集合上的双射。     

完全单半群及完全正则半群的逆断面

指出完全单半群Ｓ的任何一个Ｆ－类是逆断面,且为Ｑ－逆断面,而Ｓ的任何一个逆断面必是一个Ｆ－类,因而所有逆断面同构。并且给出完全正则半群的逆断面存在的充要条件。     

关于Fuzzy完全正则半群

本文先引入Ｆｕｚｚｙ左（Ｆｕｚｚｙ右）正则半群的概念，进而讨论Ｆｕｚｚｙ左（Ｆｕｚｚｙ右）正则半群以及Ｆｕｚｚｙ完全正则半群中Ｆｕｚｚｙ理想的一些代数性质。     

完全正则半群的Cayley表示

本文利用点集映射和等价关系得出了完全正则半群的Ｃａｙｌｅｙ表示，从而解决了１９８７年Ｍ．Ｐｅｔｒｉｃｈ提出的一个公开问题．作为特例，还得到完全单半群的ｃａｙｌｅｙ表示．     

广义模糊子半群和广义模糊完全正则子半群

给出了广义模糊子半群和广义模糊完全正则子半群的定义并在此定义下推得了它们的一些重要性质.     

完全正则半群的直觉模糊软子半群

将直觉模糊软集运用在完全正则半群上,给出了完全正则半群的直觉模糊软子半群的新概念,研究了它的一些相关性质及若干等价刻画。最后,讨论了完全正则半群的直觉模糊软子半群的同态像与原像的性质。     

完全正则半群上的H-相关同余

本文研究了完全正则半群上的H-相关同余.给出了完全正则半群上的H-相关同余的概念以及若干等价刻画.     

Abel正则球与完全正则半群

本文分别讨论了关于结合环和半群的二个定理，并且由结合环的这二个定理推出了如下准则：结合环Ｒ是Ａｂｅｌ正则的，当且仅当Ｒ的每个拟理想是正则环．     

Locally Completely Regular Epigroups

The object of the article is to characterize epigroups which are locally completely regular. Some subclasses of such epigroups are also described.     

P-congruence-free Epigroups

Let P denote the equivalence relation on an epigroup in which any of its classes consists precisely of those elements owning the same pseudo-inverse. The purpose of the paper is to characterize epigroups on which any congruence either contains P or its join with P is the identity relation on epigroups. As a special subclass of epigroups, completely 0-simple semigroups having the same property are also described.     

Exponential epigroups

We show that an exponential epigroup is a band of unipotent exponential epigroups (in which the set of idempotents forms a subsemigroup). Also, we investigate the structure of unipotent exponential epigroups. In addition, a characterization of the least normal band of groups congruence is given for an arbitrary medial epigroup. It is also shown that k-exponential eventually regular semigroups are necessarily epigroups.     

Permutative k-exponential epigroups

We prove that any permutative k-exponential epigroup is a normal band of unipotent epigroups. Moreover, we describe the least regular congruence on such semigroups. Finally, we give an example of a permutative epigroup which is not a band of unipotent epigroups.     

Epigroups in which the relation of having the same pseudo-inverse is a congruence

The purpose of the paper is to find several characterizations of epigroups mentioned in the title. Some special cases are also considered.     

Epigroups whose subepigroup lattice is lower semimodular

We characterize epigroups mentioned in the title.     

Lattice properties of epigroups

The aim of this paper is to give a survey of the first advances in the study of diverse interconnections between epigroups and their subepigroup lattices.     

Epigroups in which the operation of taking pseudo-inverse is an endomorphism

The purpose of the paper is to find a characterization of the epigroups mentioned in the title in terms of forbidden divisors, which solves a problem posed by L.N. Shevrin.