Results 41 to 50 of about 19,208 (202)

Characterizations of Ordered Semigroups by New Type of Interval Valued Fuzzy Quasi-Ideals

open access: yesJournal of Applied Mathematics, 2014
The concept of non-k-quasi-coincidence of an interval valued ordered fuzzy point with an interval valued fuzzy set is considered. In fact, this concept is a generalized concept of the non-k-quasi-coincidence of a fuzzy point with a fuzzy set.
Jian Tang, Xiangyun Xie, Yanfeng Luo
doaj   +1 more source

The Source of Semiprimeness of Semigroups

open access: yesJournal of Mathematics, 2021
In this study, we define new semigroup structures using the set SS=a∈S|aSa=0 which is called the source of semiprimeness for a semigroup S with zero element.
Barış Albayrak   +2 more
doaj   +1 more source

Varieties of \u3cem\u3eP\u3c/em\u3e-Restriction Semigroups [PDF]

open access: yes, 2014
The restriction semigroups, in both their one-sided and two-sided versions, have arisen in various fashions, meriting study for their own sake. From one historical perspective, as “weakly E-ample” semigroups, the definition revolves around a “designated ...
Jones, Peter R.
core   +1 more source

Stability of Viscous Three‐Dimensional Stratified Couette Flow via Dispersion and Mixing

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
ABSTRACT This article explores the stability of stratified Couette flow in the viscous 3d$3d$ Boussinesq equations. In this system, mixing effects arise from the shearing background, and gravity acts as a restoring force leading to dispersive internal gravity waves.
Michele Coti Zelati   +2 more
wiley   +1 more source

Markov semigroups, monoids, and groups

open access: yes, 2012
A group is Markov if it admits a prefix-closed regular language of unique representatives with respect to some generating set, and strongly Markov if it admits such a language of unique minimal-length representatives over every generating set. This paper
Alan J. Cain   +9 more
core   +1 more source

Long‐Time Solvability and Asymptotics for the 3D Rotating MHD Equations

open access: yesMathematische Nachrichten, EarlyView.
ABSTRACT We consider the initial value problem for the 3D incompressible rotating MHD equations around a constant magnetic field. We prove the long‐time existence and uniqueness of solutions for small viscosity coefficient and high rotating speed. Moreover, we investigate the asymptotic behavior of solutions in the limit of vanishing viscosity and fast
Hiroki Ohyama
wiley   +1 more source

Left-m-filter, Right-n-filter and (m,n)-filter on Ordered Semigroup

open access: yesJournal of Taibah University for Science, 2019
In this paper, as a generalization of the concepts of left filters, right filters and filters of ordered semigroups, the concepts, for any positive integers m and n, of left-m-filters, right-n-filters and $ (m,n) $ -filters in ordered semigroups have ...
Noor Mohammad Khan, Ahsan Mahboob
doaj   +1 more source

Characterizations of Right Weakly Regular Semigroups in Terms of Generalized Cubic Soft Sets

open access: yesMathematics, 2018
Cubic sets are the very useful generalization of fuzzy sets where one is allowed to extend the output through a subinterval of [ 0 , 1 ] and a number from [ 0 , 1 ] . Generalized cubic sets generalized the cubic sets with the help of cubic
Muhammad Gulistan   +3 more
doaj   +1 more source

Semigroups Arising From Asynchronous Automata [PDF]

open access: yes, 2010
We introduce a new class of semigroups arising from a restricted class of asynchronous automata. We call these semigroups "expanding automaton semigroups." We show that the class of synchronous automaton semigroups is strictly contained in the class of ...
McCune, David
core  

On regular le-semigroups

open access: yesSemigroup Forum, 1984
A poe-groupoid is a po-groupoid endowed with a greatest element e. The same for poe (le)-semigroups. In this short note, the author continues his study of regularity of poe-semigroups. The following result is proved: Theorem. Let S be a poe-semigroup.
openaire   +4 more sources

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