Results 111 to 120 of about 366 (139)

Clifford Semigroup

2004
Alain Connes, Bernard De Wit, Sergey Gukov   +2 more
exaly   +2 more sources

CLIFFORD SEMIGROUPS AND SEMINEAR-RINGS OF ENDOMORPHISMS

, 2010
We consider the structure of the semigroup of self-mappings of a semigroup S under pointwise composition, generated by the endomorphisms of S. We show that if S is a Clifford semigroup, with underlying semilattice Λ, then the endomorphisms of S generate a Clifford semigroup E+(S) whose underlying semilattice is the set of endomorphisms of Λ.
GİLBERT, Nick D., SAMMAN, Mohammad
openaire   +2 more sources

Clifford semigroup actions

Asian-European Journal of Mathematics, 2022
In this paper, we establish the orbit-stabilizer theorem and the orbit decomposition theorem for a Clifford semigroup. Moreover, we establish that for a Clifford semigroup [Formula: see text], any two homogeneous Clifford [Formula: see text]-sets [Formula: see text] and [Formula: see text] are Clifford [Formula: see text]-isomorphic if and only if for
Monika Paul, S. K. Maity
openaire   +2 more sources

Isbell’s Zigzag theorem for permutative orthodox semigroups and clifford semigroups

Asian-European Journal of Mathematics, 2021
In this paper, we prove that the dominion of any full orthodox subsemigroup of a medial orthodox semigroup is described by the Isbell zigzag theorem in the category of medial orthodox semigroups. As a consequence, the dominions of any full completely regular subsemigroup of a medial completely regular semigroup as well as that of any full Clifford ...
Noor Alam, Noor Mohammad Khan
openaire   +1 more source

C*-algebras of Clifford semigroups

Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 1989
SynopsisWe investigate algebras associated with a (discrete) Clifford semigroupS =∪{Ge: e ∈ E{. We show that the representation theory forSis determined by an enveloping Clifford semigroupUC(S) =∪{Gx: x ∈ X} whereXis the filter completion of the semilatticeE.We describe the representation theory in terms of both disintegration theory and sheaf theory.
Duncan, John, Paterson, A. L. T.
openaire   +2 more sources

A generalized Clifford theorem of semigroups

Science China Mathematics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ren, Xue-Ming, Shum, K. P., Guo, Yu-Qi
openaire   +2 more sources

GLOBAL DETERMINISM OF CLIFFORD SEMIGROUPS

Journal of the Australian Mathematical Society, 2014
AbstractIn this paper we shall give characterizations of the closed subsemigroups of a Clifford semigroup. Also, we shall show that the class of all Clifford semigroups satisfies the strong isomorphism property and so is globally determined. Thus the results obtained by Kobayashi [‘Semilattices are globally determined’,Semigroup Forum29(1984), 217–222]
Gan, Aiping, Zhao, Xianzhong
openaire   +2 more sources

Right Clifford restriction semigroups

Journal of Algebra and Its Applications, 2023
Right C-restriction semigroups are the common generalizations of right C-rpp semigroups and right C-lpp semigroups. The structure of such a semigroup is established in terms of the [Formula: see text]-product of a right regular band and a C-restriction semigroup.
Jiajia Duan, Junying Guo, Xiaojiang Guo, K. P. Shum   +3 more
openaire   +1 more source

Clifford semigroups as functors and their cohomology

Semigroup Forum, 2011
Let \(\mathcal C\) be a category. The `diagram category' \(Dg(\mathcal C)\) has functors \(T\colon\Sigma\to\mathcal C\) where \(\Sigma\) is a small category as its objects and certain natural transformations as its morphisms. For a semilattice \(E\) regarded as a category, a functor \(F\colon E\to\mathbf{Grp}\) is called a `semilattice imbedding' if ...
openaire   +2 more sources

Commutative clifford semigroups with maximal endomorphism semirings

Periodica Mathematica Hungarica, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Howell K.-T., Maxson C.J.
openaire   +2 more sources