Results 41 to 50 of about 1,381 (158)

n-Derivations and (n,m)-Derivations of Lattices

open access: yesMathematics, 2018
In this paper, firstly, as a generalization of derivations on a lattice, the notion of n-derivation is introduced and some fundamental properties are investigated.
Yılmaz Çeven
doaj   +1 more source

Wnil-Injective Modules [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2010
A right module M is called Wnil-injective if for any 0 ¹ a Î N( R ), there exists a positive integer n such that an ¹ 0 and any right R-homomorphism f : anR ® M can be extended to R ® M.
Raida Mahmood, Husam Mohammad
doaj   +1 more source

n-Refined Neutrosophic Modules [PDF]

open access: yesNeutrosophic Sets and Systems, 2020
This paper introduces the concept of n-refined neutrosophic module as a new generalization of neutrosophic modules and refined neutrosophic modules respectively and as a new algebraic application of n-refined neutrosophic set.
Hasan Sankari, Mohammad Abobala
doaj   +1 more source

On Oriented Colourings of Graphs on Surfaces

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT For an oriented graph G $G$, the least number of colours required to oriented colour G $G$ is called the oriented chromatic number of G $G$ and denoted χ o ( G ) ${\chi }_{o}(G)$. For a non‐negative integer g $g$ let χ o ( g ) ${\chi }_{o}(g)$ be the least integer such that χ o ( G ) ≤ χ o ( g ) ${\chi }_{o}(G)\le \unicode{x0200A}{\chi }_{o}(g)
Alexander Clow
wiley   +1 more source

Constructions of Dense Lattices over Number Fields

open access: yesTrends in Computational and Applied Mathematics, 2020
In this work, we present constructions of algebraic lattices in Euclidean space with optimal center density in dimensions 2,3,4,5,6,8 and 12, which are rotated versions of the lattices Lambda_n, for n =2,3,4,5,6,8 and K_12.
Antonio A. Andrade   +3 more
doaj   +1 more source

Signed Projective Cubes, a Homomorphism Point of View

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT The (signed) projective cubes, as a special class of graphs closely related to the hypercubes, are on the crossroad of geometry, algebra, discrete mathematics and linear algebra. Defined as Cayley graphs on binary groups, they represent basic linear dependencies.
Meirun Chen   +2 more
wiley   +1 more source

New secure distributed secret sharing scheme of n product

open access: yesTongxin xuebao, 2014
Since Shamir’s secret sharing scheme does not have the property of the multiplicative homomorphism,an encoding method is utilized for privacy-preserving data to overcome the drawbacks in secure distributed multiplication calculation when using ...
Zhen-hua CHEN   +4 more
doaj   +2 more sources

On $n$-derivations [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2016
In this article, the notion of $n-$derivation is introduced for all integers $ngeq 2$. Although all derivations are $n-$derivations,  in general these notions are not equivalent.
Mohammad Hossein Sattari
doaj  

On computing local monodromy and the numerical local irreducible decomposition

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract Similarly to the global case, the local structure of a holomorphic subvariety at a given point is described by its local irreducible decomposition. Geometrically, the key requirement for obtaining a local irreducible decomposition is to compute the local monodromy action of a generic linear projection at the given point, which is always well ...
Parker B. Edwards   +1 more
wiley   +1 more source

Equivalence of blocks for the general linear Lie superalgebra

open access: yes, 2013
We develop a reduction procedure which provides an equivalence (as highest weight categories) from an arbitrary block (defined in terms of the central character and the integral Weyl group) of the BGG category O for a general linear Lie superalgebra to ...
Cheng, Shun-Jen   +2 more
core   +1 more source

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