Results 21 to 30 of about 6,864 (172)

On Naturally Ordered Abundant Semigroups with an Adequate Monoid Transversal

open access: yesDiscrete Dynamics in Nature and Society, 2019
In this paper, we study a class of naturally ordered abundant semigroups with an adequate monoid transversal, namely, naturally ordered concordant semigroups with an adequate monoid transversal.
Wei Chen
doaj   +1 more source

Weakly abundant semigroups within certain subsemigroups of the semigroup of full contraction mappings of a finite chain

open access: yesMathematics Open
Let [Formula: see text] be a finite n-chain [Formula: see text], and let [Formula: see text] be the monoid of full contraction mappings on [Formula: see text].
M. M. Zubairu, A. Umar, A. Jibrin
doaj   +1 more source

Unicyclic Graphs Whose Completely Regular Endomorphisms form a Monoid

open access: yesMathematics, 2020
In this paper, completely regular endomorphisms of unicyclic graphs are explored. Let G be a unicyclic graph and let c E n d ( G ) be the set of all completely regular endomorphisms of G.
Rui Gu, Hailong Hou
doaj   +1 more source

Division in the Plactic Monoid [PDF]

open access: yes, 2022
In [1], a novel cryptographic key exchange technique was proposed using the plactic monoid, based on the apparent difficulty of solving division problems in that monoid.
Chris Monico
core   +1 more source

Comultiplication on monoids

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
A comultiplication on a monoid S is a homomorphism m:S→S∗S (the free product of S with itself) whose composition with each projection is the identity homomorphism.
Martin Arkowitz, Mauricio Gutierrez
doaj   +1 more source

Algebraic and combinatorial structures on Baxter permutations [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
We give a new construction of a Hopf subalgebra of the Hopf algebra of Free quasi-symmetric functions whose bases are indexed by objects belonging to the Baxter combinatorial family (\emphi.e.
Samuele Giraudo
doaj   +1 more source

Group Fuzzy Languages and its Generalizations

open access: yesRatio Mathematica, 2023
In fuzzy language theory, every monoid is the syntactic monoid of some fuzzy language. By using this result the properties of fuzzy language can be studied by the algebraic properties of the syntactic monoids. There are so many methods for studying fuzzy
Archana Vasudevan Pillai Prasanna   +2 more
doaj   +1 more source

On seminormal monoid rings [PDF]

open access: yes, 2006
Given a seminormal affine monoid M we consider several monoid properties of M and their connections to ring properties of the associated affine monoid ring K[M] over a field K.
Li, Ping, Bruns, Winfried, Römer, Tim
core   +1 more source

On endomorphisms of groups of orders 37–47; pp. 137–150 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2017
It is proved that the finite groups of orders 37–47 are determined by their endomorphism monoids in the class of all groups.
Alar Leibak, Peeter Puusemp
doaj   +1 more source

On locally compact shift-continuous topologies on the α-bicyclic monoid

open access: yesTopological Algebra and its Applications, 2018
A topology τ on a monoid S is called shift-continuous if for every a, b ∈ S the two-sided shift S → S, x ↦ axb, is continuous. For every ordinal α ≤ ω, we describe all shift-continuous locally compact Hausdorff topologies on the α-bicyclic monoid Bα ...
Bardyla Serhii
doaj   +1 more source

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