Results 31 to 40 of about 180 (160)

HUBUNGAN DERIVASI PRIME NEAR-RING DENGAN SIFAT KOMUTATIF RING

open access: yesE-Jurnal Matematika, 2017
Near-rings are generalize from rings. A research on near-ring is continous included a research on prime near-rings and one of this research is about derivation on prime near-rings.
PRADITA Z. TRIWULANDARI   +2 more
doaj   +1 more source

On the Semigroup Whose Elements Are Subgraphs of a Complete Graph

open access: yesMathematics, 2018
Let K n be a complete graph on n vertices. Denote by S K n the set of all subgraphs of K n . For each G , H ∈ S K n , the ring sum of G and H is a graph whose vertex set is V ( G ) ∪ V ( H ) and whose edges are ...
Yanisa Chaiya   +3 more
doaj   +1 more source

Semilocal semigroup rings [PDF]

open access: yesGlasgow Mathematical Journal, 1984
Semilocal and related classes of group rings have been investigated by many authors (cf. [10]). In particular, the following results have been obtained.Theorem A[4,10]. Let K be a field and G a group.(i) If ch K = 0, then K[G] is semilocal if and only if G is finite.(ii) If ch K = p>0 and G is locally finite, then K[G] is semilocal if and only if G ...
openaire   +1 more source

On the dimension of the minimal vertex cover semigroup ring of an unmixed bipartite graph

open access: yesLe Matematiche, 2008
In a paper in 2008, Herzog, Hibi and Ohsugi introduced and studied the semigroup ring associated to the set of minimal vertex covers of an unmixed bipartite graph.
Cristina Bertone, Vincenzo Micale
doaj  

Generalized Derivations on Prime Near Rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2013
Let N be a near ring. An additive mapping f:N→N is said to be a right generalized (resp., left generalized) derivation with associated derivation d on N if f(xy)=f(x)y+xd(y) (resp., f(xy)=d(x)y+xf(y)) for all x,y∈N.
Asma Ali, Howard E. Bell, Phool Miyan
doaj   +1 more source

On the Betti numbers of some semigroup rings

open access: yesLe Matematiche, 2012
For any numerical semigroup S, there are infinitely many numerical symmetric semigroups T such that S = T/2 (see below for the definition of T/2) is their half.
Vincenzo Micale, Anda Georgiana Olteanu
doaj  

Semigroup ideal in Prime Near-Rings with Derivations

open access: yesمجلة بغداد للعلوم, 2011
In this paper we generalize some of the results due to Bell and Mason on a near-ring N admitting a derivation D , and we will show that the body of evidence on prime near-rings with derivations have the behavior of the ring.
Baghdad Science Journal
doaj   +1 more source

Studio di una classe notevole di anelli dotata di inverso generalizzato

open access: yesLe Matematiche, 2008
We study a remarkable class of rings, which we call corpids, that is the rings, different from zero, (K;+; .); such that (K; .) is an inverse semi-group (or groupid, which is the name given by G. Tallini [4]).
Maria Scafati Tallini, Maurizio Iurlo
doaj  

Isomorphism Theorems on Quasi Module

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2019
A quasimodel is an algebraic axiomatisation of the hyperspace structure based on a module. We initiated this structure in our paper [2]. It is a generalisation of the module structure in the sense that every module can be embedded into a quasi module and
Jana Sandip, Mazumder Supriyo
doaj   +1 more source

Torsion-Free Abelian Semigroup Rings X

open access: yesMathematical journal of Ibaraki University, 1978
This is a continuation of the previous part VII in this series [ibid. 23, 1-8 (1991; Zbl 0756.13012)]. This paper concerns properties of a semigroup ring \(A[X;S]\) of a commutative semigroup \(S\) over a commutative ring \(A\). The first part generalizes and solves some problems of Karpilovsky about the unit group of \(A[X;S]\).
openaire   +12 more sources

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