Results 1 to 10 of about 57,932 (220)

The rank of a commutative semigroup [PDF]

Mathematica Bohemica, 2009
Summary: The concept of rank of a commutative cancellative semigroup is extended to all commutative semigroups \(S\) by defining \(\text{rank\,}S\) as the supremum of cardinalities of finite independent subsets of \(S\). Representing such a semigroup \(S\) as a semilattice \(Y\) of (Archimedean) components \(S_\alpha\), we prove that \(\text{rank\,}S\)
Cegarra, Antonio M., Petrich, Mario
openaire   +3 more sources

A new non-commutative key exchange protocol on combinatorial semigroup

Automatika
Since the launch of the post-quantum cryptography standardization project by NIST, post-quantum cryptography has become a prominent research area. Non-commutative cryptography constructed using NP-complete problems is widely regarded resistant to quantum
Jing Zhang, Ya-Juan Yang, JingJing Bao
exaly   +3 more sources

(2n+1)-Weak Module Amenability of Triangular Banach Algebras on Inverse Semigroup Algebras [PDF]

Journal of Sciences, Islamic Republic of Iran, 2021
Let  be a commutative (not necessary unital) inverse semigroup with the set of idempotents  ‎then  is a commutative Banach‎ -module with canonical actions‎.
Ebrahim Nasrabadi, Mohammad Ramezanpour, Asadollah Aasaraai   +2 more
doaj   +1 more source

First and Second Module Cohomology Groups for Non Commutative Semigroup Algebras [PDF]

Sahand Communications in Mathematical Analysis, 2020
‎Let $S$ be a (not necessarily commutative) Clifford semigroup with idempotent set $E$. In this paper, we show that the first (second) Hochschild cohomology group and the first (second) module cohomology group of  semigroup algbera $\ell^1(S)$ with ...
Ebrahim Nasrabadi
doaj   +1 more source

Second Module Cohomology Group of Induced Semigroup Algebras [PDF]

Sahand Communications in Mathematical Analysis, 2021
For a discrete semigroup $ S $ and a left multiplier operator  $T$ on  $S$, there is a new induced semigroup $S_{T}$, related to $S$ and $T$. In this paper, we show that if $T$ is multiplier and bijective,  then the second module cohomology groups ...
Mohammad Reza Miri, Ebrahim Nasrabadi, Kianoush Kazemi   +2 more
doaj   +1 more source

Commutative Topological Semigroups Embedded into Topological Abelian Groups

Axioms, 2020
In this paper, we give conditions under which a commutative topological semigroup can be embedded algebraically and topologically into a compact topological Abelian group.
Julio César Hernández Arzusa
doaj   +1 more source

Semigroup Structures and Commutative Ideals of BCK-Algebras Based on Crossing Cubic Set Structures

Axioms, 2022
First, semigroup structure is constructed by providing binary operations for the crossing cubic set structure. The concept of commutative crossing cubic ideal is introduced by applying crossing cubic set structure to commutative ideal in BCK-algebra, and
Mehmet Ali Öztürk, Damla Yılmaz, Young Bae Jun   +2 more
doaj   +1 more source

On the joins of semigroup varieties with the variety of commutative semigroups [PDF]

Proceedings of the American Mathematical Society, 1994
We show that the join of a variety of semigroups and the variety of all commutative semigroups is not finitely based, provided some weak conditions.
Sapir, M. V., Volkov, M. V.
openaire   +3 more sources

Commutativity in Double Interchange Semigroups [PDF]

Applied Categorical Structures, 2018
25 pages, 5 figures, 27 references, comments ...
Fatemeh Bagherzadeh, Murray R. Bremner
openaire   +2 more sources

Varieties Of Permutative Semigroups Closed Under Dominions [PDF]

Journal of Algebraic Systems, 2023
In this paper, we partially generalize a result of Isbell from the class of commu- tative semigroups to some generalized class of commutative semigroups by showing that dominion of such semigroups belongs to the same class by using Isbell’s zigzag ...
Humaira Maqbool, Mohammad Bhat
doaj   +1 more source