Results 21 to 30 of about 760 (210)

The complexity of properties of transformation semigroups [PDF]

open access: yesInternational Journal of Algebra and Computation, 2019
We investigate the computational complexity for determining various properties of a finite transformation semigroup given by generators. We introduce a simple framework to describe transformation semigroup properties that are decidable in [Formula: see text].
Lukas Fleischer, Trevor Jack
openaire   +2 more sources

Partial Orders on Transformation Semigroups [PDF]

open access: yesMonatshefte f�r Mathematik, 2003
Denote by \(P(X)\) the semigroup, under composition, of all partial transformations of the set \(X\). Denote by \(\text{dom\,}\alpha\) the domain of \(\alpha\in P(X)\) and denote its range by \(\text{ran\,}\alpha\). Define a partial order \(\leq\) on \(P(X)\) by \(\alpha\leq\beta\) if \(\alpha=\gamma\beta=\beta\mu\) and \(\alpha=\alpha\mu\) for some \(\
Smith, M. Paula Marques, Sullivan, R. P.
openaire   +2 more sources

Action graph of a semigroup act & its functorial connection [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2023
In this paper we define C-induced action graph G(S,a,C;A) corresponding to a semigroup act (S,a,A) and a subset C of S. This generalizes many interesting graphs including Cayley Graph of groups and semigroups, Transformation Graphs (TRAG), Group Action ...
Promit Mukherjee   +2 more
doaj   +1 more source

On theoretical and practical aspects of Duhamel’s integral [PDF]

open access: yesArchives of Control Sciences, 2021
The paper is a newapproach to the Duhamel integral. It contains an overviewof formulas and applications of Duhamel’s integral as well as a number of new results on the Duhamel integral and principle.
Michał Różański   +3 more
doaj   +1 more source

Representation of right zero semigroups and their semilattices by a transformation semigroup

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022
Background. As is known, an arbitrary semigroup can be represented by a semigroup of transformations that are right shifts either in this semigroup itself or in the extended semigroup obtained from the original one by adding an outer unit. The problems
L.V. Zyablitseva   +2 more
doaj   +1 more source

Some faces of Smarandache semigroups' concept in transformation semigroups' approach [PDF]

open access: yes, 2007
In the following text, the main aim is to distinguish some relations between Smarad- che semigroups and (topological) transformation semigroups areas.
Ayatollah, Zadeh Shirazi, Hosseini, A.
core   +1 more source

Flows on Classes of Regular Semigroups and Cauchy Categories

open access: yesJournal of Mathematics, 2019
We consider the structure of the flow monoid for some classes of regular semigroups (which are special case of flows on categories) and for Cauchy categories.
Suha Ahmed Wazzan
doaj   +1 more source

Exploring Tetris as a Transformation Semigroup [PDF]

open access: yes, 2021
Tetris is a popular puzzle video game, invented in 1984. We formulate two versions of the game as a transformation semigroup and use this formulation to view the game through the lens of Krohn-Rhodes theory. In a variation of the game upon which it restarts if the player loses, we find permutation group structures, including the symmetric group $S_5 ...
Peter C. Jentsch, Chrystopher L. Nehaniv
openaire   +2 more sources

Partial Menger algebras and their weakly isomorphic representation

open access: yesMathematics Open, 2022
As generalization of semigroups, Karl Menger introduced in the 1940th algebras of multiplace operations. Such algebras satisfy the superassociative law, a generalization of the associative law.
K. Denecke
doaj   +1 more source

Magnifiers in Some Generalization of the Full Transformation Semigroups

open access: yesMathematics, 2020
An element a of a semigroup S is called a left [right] magnifier if there exists a proper subset M of S such that a M = S ( M a = S ) .
Thananya Kaewnoi   +2 more
doaj   +1 more source

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