Symmetry is one of the most important organising principles in the natural sciences. The mathematical theory of symmetry has long been associated with group theory, but it is a …
KSS Nambooripad - Proceedings of the Edinburgh Mathematical …, 1980 - cambridge.org
It is well-known that on an inverse semigroup S the relation≦ defined by a≦ b if and only if aa− 1= ab− 1 is a partial order (called the natural partial order) on S and that this relation is …
DB McAlister - Transactions of the American Mathematical Society, 1974 - ams.org
An inverse semigroup is called proper if the equations $ ae= e={e^ 2} $ together imply ${a^ 2}= a $. In a previous paper, with the same title, the author proved that every inverse …
M Petrich, NR Reilly - The Quarterly Journal of Mathematics, 1979 - academic.oup.com
AN inverse semigroup is E-unitary if ea= e2= e implies that a2= a. McAlister [3],[4] proved two remarkable theorems concerning these semigroups:(1) every E-unitary inverse …
DB McAllister - Journal of the Australian Mathematical Society, 1976 - cambridge.org
An inverse semigroup S is called E-unitary if the equations ea= e= e2 together imply a2= a. In a previous paper the author showed that every inverse semigroup is an idempotent …
X Guo - Glasgow Mathematical Journal, 2001 - cambridge.org
F-abundant semigroups Page 1 F-ABUNDANT SEMIGROUPS* XIAOJIANG GUO Department of Mathematics, Jiangxi Normal University, Nanchang, Jiangxi 330027, PR China and …
O Gutik, A Savchuk - arXiv preprint arXiv:1904.11802, 2019 - arxiv.org
In this paper we study submonoids of the monoid $\mathscr {I} _\infty^{\,\Rsh\!\!\!\nearrow}(\ mathbb {N}) $ of almost monotone injective co-finite partial selfmaps of positive integers …
O Gutik, A Savchuk - arXiv preprint arXiv:1904.06638, 2019 - arxiv.org
The semigroup $\mathbf {I}\mathbb {N} _ {\infty} $ of all partial co-finite isometries of positive integers is studied. We describe Green's relations on the semigroup $\mathbf {I}\mathbb {N} …