Results 61 to 70 of about 199,462 (178)

Some Notes on Semiabelian Rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
It is proved that if a ring R is semiabelian, then so is the skew polynomial ring R[x;σ], where σ is an endomorphism of R satisfying σ(e)=e for all e∈E(R). Some characterizations and properties of semiabelian rings are studied.
Junchao Wei, Nanjie Li
doaj   +1 more source

On λ-rings and topological realization

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
It is shown that most possibly truncated power series rings admit uncountably many filtered λ-ring structures. The question of how many of these filtered λ-ring structures are topologically realizable by the K-theory of torsion-free spaces is also ...
Donald Yau
doaj   +1 more source

Radicals Of Polynomial Rings [PDF]

open access: yesCanadian Journal of Mathematics, 1956
Introduction. Let R be a ring and let R[x] be the ring of all polynomials in a commutative indeterminate x over R. Let J(R) denote the Jacobson radical (5) of the ring R and let L(R) be the lower radical (4) of R. The main object of the present note is to determine the radicals J(R[x]) and L(R[x]).
openaire   +1 more source

Canonical bases for subalgebras of factor algebras [PDF]

open access: yesComputer Science Journal of Moldova, 1999
We introduce canonical bases for subalgebras of quotients of the commutative and non-commutative polynomial ring. The usual theory for Grobner bases and its counterpart for subalgebras of polynomial rings, also called SAGBI bases, are combined to obtain ...
P. Nordbeck
doaj  

Some strange behaviors of the power series ring R[[X]]

open access: yesITM Web of Conferences, 2018
Let R be a commutative ring with identity. Let R[X] and R[[X]] be the polynomial ring and the power series ring respectively over R. Being the completion of R[X] (under the X-adic topology), R[[X]] does not always share the same property with R[X].
Phan Thanh Toan
doaj   +1 more source

Free field primaries in general dimensions: counting and construction with rings and modules

open access: yesJournal of High Energy Physics, 2018
We define lowest weight polynomials (LWPs), motivated by so(d, 2) representation theory, as elements of the polynomial ring over d × n variables obeying a system of first and second order partial differential equations.
Robert de Mello Koch, Sanjaye Ramgoolam
doaj   +1 more source

NIL DERIVATIONS AND d-IDEALS ON POLYNOMIAL RINGS

open access: yesBarekeng
Let  be a ring. An additive mapping  is called derivation if  satisfies Leibniz's rule, i.e.,   for every   In a special case, for each  there exists a positive integer  which depends on  such that , then  is called as a nil derivation on .
Ditha Lathifatul Mursyidah   +3 more
doaj   +1 more source

Simple ambiskew polynomial rings

open access: yesJournal of Algebra, 2013
We determine simplicity criteria in characteristics 0 and $p$ for a ubiquitous class of iterated skew polynomial rings in two indeterminates over a base ring. One obstruction to simplicity is the possible existence of a canonical normal element $z$. In the case where this element exists we give simplicity criteria for the rings obtained by inverting $z$
Jordan, David A., Wells, Imogen E.
openaire   +2 more sources

The discrete logarithm problem in Bergman's non-representable ring

open access: yesJournal of Mathematical Cryptology, 2012
Bergman's ring , parameterized by a prime number p, is a ring with p5 elements that cannot be embedded in a ring of matrices over any commutative ring. This ring was discovered in 1974.
Banin Matan, Tsaban Boaz
doaj   +1 more source

Radical Structures of Fuzzy Polynomial Ideals in a Ring

open access: yesDiscrete Dynamics in Nature and Society, 2016
We investigate the radical structure of a fuzzy polynomial ideal induced by a fuzzy ideal of a ring and study its properties. Given a fuzzy ideal β of R and a homomorphism f:R→R′, we show that if fx is the induced homomorphism of f, that is, fx(∑i=0naixi)
Hee Sik Kim, Chang Bum Kim, Keum Sook So
doaj   +1 more source

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