Results 31 to 40 of about 125,725 (293)

On strongly Π-regular ideals [PDF]

open access: yes, 2005
In this paper, we introduce the concept of strongly π-regular ideal of a ring. We prove that every square regular matrix over a strongly π-regular ideal of a ring admits a diagonal ...
Chen, Huanyin, Chen, Miaosen
core   +1 more source

Fundamental relation on m-idempotent hyperrings

open access: yesOpen Mathematics, 2017
The γ*-relation defined on a general hyperring R is the smallest strongly regular relation such that the quotient R/γ* is a ring. In this note we consider a particular class of hyperrings, where we define a new equivalence, called εm∗$\varepsilon^{*}_{m}
Norouzi Morteza, Cristea Irina
doaj   +1 more source

Some results on the filter method for nonlinear complementary problems

open access: yesJournal of Inequalities and Applications, 2021
Recent studies show that the filter method has good numerical performance for nonlinear complementary problems (NCPs). Their approach is to reformulate an NCP as a constrained optimization solved by filter algorithms.
Jueyu Wang, Chao Gu, Guoqiang Wang
doaj   +1 more source

Strongly regular graphs [PDF]

open access: yes, 1975
In this paper we have tried to summarize the known results on strongly regular graphs. Both groupal and combinatorial aspects of the theory have been included. We give the list of all known strongly regular graphs and a large bibliography of this subject.
Hubaut, Xavier L.   +2 more
core   +1 more source

A Strong Regular Relation on ?-Semihyperrings [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2011
The concept of algebraic hyperstructures introduced by Marty as a generalization of ordinary algebraic structures. In an ordinary algebraic structure, the composition of two elements is an element, while in an algebraic hyperstructure, the composition of
B Davaz
doaj  

Co-cliques and star complements in extremal strongly regular graphs [PDF]

open access: yes, 2006
Suppose that the positive integer μ is the eigenvalue of largest multiplicity in an extremal strongly regular graph G. By interlacing, the independence number of G is at most 4μ2 + 4μ - 2.
Rowlinson, Peter   +2 more
core   +1 more source

Regularity of Intuitionistic Fuzzy Relations on Hypergroupoids

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2014
In this paper we introduce the notions of regular and strongly regular intuitionistic fuzzy relations on hypergroupoids, studying some related properties and connections with the classical case. Then we investigate the lattice structure of these kinds of
Cristea Irina
doaj   +1 more source

Spreads in strongly regular graphs [PDF]

open access: yes, 1995
A spread of a strongly regular graph is a partition of the vertex set into cliques that meet Delsarte's bound (also called Hoffman's bound). Such spreads give rise to colorings meeting Hoffman's lower bound for the chromatic number and to ...
Touchev, V.D.   +9 more
core   +1 more source

Strongly regular (alpha,beta)-geometries [PDF]

open access: yes, 2001
In this paper we introduce strongly regular (alpha, beta)-geometries. These are a class of geometries that generalise semipartial geometries. Like semipartial geometries the underlying point graph is strongly regular and this is part of the motivation ...
Hamilton, Nicholas   +3 more
core   +1 more source

Characterizations of (strongly) ordered regular relations on ordered semihypergroups

open access: yesJournal of Algebra, 2016
In this paper, the authors study the concept of ordered regular (strongly ordered regular) equivalence relations on ordered semihypergroups. In particular, they construct an ordered regular equivalence relation on an ordered semihypergroup by hyperideals such that the corresponding quotient structure is also an ordered semihypergroup, which answers the
Ze Gu, Xilin Tang
openaire   +1 more source

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