Results 71 to 80 of about 331 (138)

Characterization of some types of ordered semigroups in terms of fuzzy sets

open access: yes, 2008
It is well known that the right (left) regular, regular, and intra-regular ordered semigroups play an essential role in studying the structure, especially the decomposition, of ordered semigroups.
Tsingelis, M., Kehayopulu, N.
core  

Sandwich semigroups in locally small categories I : foundations

open access: yes, 2018
Fix (not necessarily distinct) objects i and j of a locally small category S, and write Sij for the set of all morphisms i→ j. Fix a morphism a ∈ Sji, and define an operation ⋆ a on Sij by x⋆a y= xay for all x, y ∈ Sij.
Durdev, Ivana   +6 more
core   +1 more source

Homotopy Path Spaces for Families of Admissible Paths

open access: yes, 2017
Motivated by the search for universal orbits in geometric control theory and universal topological semigroups over local semigroups in topological groups, particularly Lie groups, we introduce a very general axiomatic notion of “trajectory,” namely a ...
Lawson, Jimmie, Kizil, Eyüp
core   +1 more source

Fuzzy bipolar soft semiprime ideals in ordered semigroups. [PDF]

open access: yesHeliyon, 2021
Aziz-Ul-Hakim, Khan H, Ahmad I, Khan A.
europepmc   +1 more source

On tau functions associated with linear systems [PDF]

open access: yes, 2012
\noindent {\bf Abstract} This paper considers the Fredholm determinant $\det (I-\Gamma_x)$ of a Hankel integral operator on $L^2(0, \infty )$ with kernel $\phi (s+t+2x)$, where $\phi$ is a matrix scattering function.
Samantha L. Newsham   +3 more
core  

Topics in combinatorial semigroup theory

open access: yes, 2012
In this thesis we discuss various topics from Combinatorial Semigroup Theory: automaton semigroups; finiteness conditions and their preservation under certain semigroup theoretic notions of index; Markov semigroups; word-hyperbolic semigroups; decision ...
Maltcev, Victor
core  

Dots and lines : geometric semigroup theory and finite presentability

open access: yes, 2015
Geometric semigroup theory means different things to different people, but it is agreed that it involves associating a geometric structure to a semigroup and deducing properties of the semigroup based on that structure.
Awang, Jennifer S.
core  

Topological diffuse semigroups (systems with a stochastic product).

open access: yes, 1966
A generalization of the concept of a locally compact Hausdorff topological semigroup and its associated convolution semigroup of regular Borel probabilities is defined and studied.
Armstrong, William Ward
core  

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