Results 1 to 10 of about 175,765 (78)

Cramer's rule for implicit linear differential equations over a non-Archimedean ring

open access: yesVisnik Harkivsʹkogo Nacionalʹnogo Universitetu im. V.N. Karazina. Cepiâ Matematika, Prikladna Matematika i Mehanika, 2022
We consider a linear nonhomogeneous $m$-th order differential equation in a ring of formal power series with coefficients from some field of characteristic zero.
A. Goncharuk
doaj   +1 more source

Implicit linear difference equations over a non-Archi-medean ring

open access: yesVisnik Harkivsʹkogo Nacionalʹnogo Universitetu im. V.N. Karazina. Cepiâ Matematika, Prikladna Matematika i Mehanika, 2021
Over any field an implicit linear difference equation one can reduce to the usual explicit one, which has infinitely many solutions ~ one for each initial value.
Anna Goncharuk
doaj   +1 more source

PRESIMPLIFIABLE AND WEAKLY PRESIMPLIFIABLE RINGS

open access: yesBarekeng, 2023
Let  be a commutative ring with identity. Two elements   and b in   are called to be associates if  and , or equivalently, if . The generalization of associate relation in R has given the idea for definitions of presimplifiable and weakly presimplifiable
Deby Anastasya, Sri Wahyuni
doaj   +1 more source

LIFTED CODES OVER FINITE CHAIN RINGS [PDF]

open access: yes, 2011
In this paper, we study lifted codes over finite chain rings.
Dougherty, Steven T.   +2 more
core   +1 more source

Multiplicative Structure and Hecke Rings of Generator Matrices for Codes over Quotient Rings of Euclidean Domains

open access: yesMathematics, 2017
In this study, we consider codes over Euclidean domains modulo their ideals. In the first half of the study, we deal with arbitrary Euclidean domains.
Hajime Matsui
doaj   +1 more source

Moduli space of filtered λ-ringstructures over a filtered ring

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
Motivated in part by recent works on the genus of classifying spaces of compact Lie groups, here we study the set of filtered λ-ring structures over a filtered ring from a purely algebraic point of view. From a global perspective, we first show that this
Donald Yau
doaj   +1 more source

Stillman's conjecture via generic initial ideals [PDF]

open access: yes, 2019
Using recent work by Erman-Sam-Snowden, we show that finitely generated ideals in the ring of bounded-degree formal power series in infinitely many variables have finitely generated Gr\"obner bases relative to the graded reverse lexicographic order.
Draisma, Jan   +2 more
core   +3 more sources

Generators of D-modules in positive characteristic [PDF]

open access: yes, 2004
Let R be either a polynomial or a formal power series ring in a finite number of variables over a field k of characteristic p > 0 and let D be the ring of klinear differential operators of R.
Alvarez-Montaner, Josep   +2 more
core   +3 more sources

Niceness theorems [PDF]

open access: yes, 2008
Many things in mathematics seem lamost unreasonably nice. This includes objects, counterexamples, proofs. In this preprint I discuss many examples of this phenomenon with emphasis on the ring of polynomials in a countably infinite number of variables in ...
Hazewinkel, Michiel
core   +2 more sources

On Magnus' Freiheitssatz and free polynomial algebras [PDF]

open access: yesInternational Journal of Group Theory, 2015
The Freiheitssatz of Magnus for one-relator groups is one of the cornerstones of combinatorial group theory. In this short note which is mostly expository we discuss the relationship between the Freiheitssatz and corre- sponding results in free power ...
Benjamin Fine   +2 more
doaj  

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