Results 31 to 40 of about 1,116,054 (170)

Uniformity in association schemes and coherent configurations: cometric Q-antipodal schemes and linked systems [PDF]

open access: yes, 2013
Inspired by some intriguing examples, we study uniform association schemes and uniform coherent configurations, including cometric Q-antipodal association schemes. After a review of imprimitivity, we show that an imprimitive association scheme is uniform
Abdukhalikov   +61 more
core   +2 more sources

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

On MLGP- Rings [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2019
An ideal K of a ring R is called right (left) generalized pure (GP -ideal) if for every a ∈ K, there exists m ∈ Z+, and b ∈ K such that  am = am b ( am = b am) . A ring R is called MLGP-ring if every right maximal ideal is left GP-ideal.
Raida mahmood, Ebtehal Mageed
doaj   +1 more source

Switched graphs of some strongly regular graphs related to the symplectic graph [PDF]

open access: yesDesigns, Codes and Cryptography, 2017
Applying a method of Godsil and McKay \cite{GM} to some graphs related to the symplectic graph, a series of new infinite families of strongly regular graphs with parameters $(2^n\pm2^{(n-1)/2},2^{n-1}\pm2^{(n-1)/2},2^{n-2}\pm2^{(n-3)/2},2^{n-2}\pm2^{(n-1)/2})$ are constructed for any odd $n \geq 5$. The construction is described in terms of geometry of
Hui, Alice M. W., Rodrigues, B. G.
openaire   +2 more sources

Expressiveness modulo Bisimilarity of Regular Expressions with Parallel Composition (Extended Abstract) [PDF]

open access: yes, 2010
The languages accepted by finite automata are precisely the languages denoted by regular expressions. In contrast, finite automata may exhibit behaviours that cannot be described by regular expressions up to bisimilarity.
Bas Luttik   +19 more
core   +7 more sources

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

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

Vortex patterns in a fast rotating Bose-Einstein condensate [PDF]

open access: yes, 2004
For a fast rotating condensate in a harmonic trap, we investigate the structure of the vortex lattice using wave functions minimizing the Gross Pitaveskii energy in the Lowest Landau Level.
Aftalion, Amandine   +2 more
core   +3 more sources

Convex ordered Gamma-semihypergroups associated to strongly regular relations

open access: yesMATEMATIKA, 2017
In this study, we introduce and investigate the notion of convex ordered Gamma-semihypergroups associated to strongly regular relations. Afterwards, we prove that if sigma is a strongly regular relation on a convex ordered Gamma-semihypergroup, then the quotient set is an ordered Gamma-sigma-semigroup.
Saber Omidi, Bijan Davvaz
openaire   +2 more sources

Big Entropy Fluctuations in Statistical Equilibrium: The Macroscopic Kinetics

open access: yes, 2000
Large entropy fluctuations in an equilibrium steady state of classical mechanics were studied in extensive numerical experiments on a simple 2--freedom strongly chaotic Hamiltonian model described by the modified Arnold cat map.
A. Cottrell   +22 more
core   +2 more sources

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