Results 51 to 60 of about 1,334 (223)

Fixed and Residual Modules

open access: yesНауковий вісник Ужгородського університету. Серія: Математика і інформатика, 2017
The article deals with the properties of fixed and residual endomorphism submodules of modules over arbitrary associative rings with 1. It is shown how they can be used to represent formal matrices images of group homomorphisms generated by elementary ...
В. М. Петерчук   +1 more
doaj   +1 more source

Morita duality for endomorphism rings [PDF]

open access: yesProceedings of the American Mathematical Society, 1972
A ring R is said to have a left Morita duality with a ring S if there is an additive contravariant equivalence between two categories of left R-modules and right S-modules which include all finitely generated modules in RV and Vs respectively and which are both closed under submodules and homomorphic images.
Miller, R. W., Turnidge, D. R.
openaire   +2 more sources

On the additive image of zeroth persistent homology

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract For a category X$X$ and a finite field F$F$, we study the additive image of the functor H0(−;F)∗:rep(X,Top)→rep(X,VectF)$\operatorname{H}_0(-;F)_* \colon \operatorname{rep}(X, \mathbf {Top}) \rightarrow \operatorname{rep}(X, \mathbf {Vect}_F)$, or equivalently, of the free functor rep(X,Set)→rep(X,VectF)$\operatorname{rep}(X, \mathbf {Set ...
Ulrich Bauer   +3 more
wiley   +1 more source

Jordan ?-Centralizers of Prime and Semiprime Rings

open access: yesمجلة بغداد للعلوم, 2010
The purpose of this paper is to prove the following result: Let R be a 2-torsion free ring and T: R?R an additive mapping such that T is left (right) Jordan ?-centralizers on R.
Baghdad Science Journal
doaj   +1 more source

On the automorphisms of the power semigroups of a numerical semigroup

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract If H$H$ is a numerical semigroup (i.e., a cofinite subset of the non‐negative integers closed under addition), then the collection of all non‐empty subsets of H$H$ forms a semigroup P(H)$\mathcal {P}(H)$ under the sumset operation induced by addition in H$H$.
Salvatore Tringali, Kerou Wen
wiley   +1 more source

The endomorphism ring theorem for Galois and depth two extensions [PDF]

open access: yes, 2006
Let S be the left bialgebroid EndABB over the centralizer R of a right depth two (D2) algebra extension A|B, which is to say that its tensor-square is isomorphic as A–B-bimodules to a direct summand of a finite direct sum of A with itself.
Kadison, Lars   +2 more
core   +1 more source

On the R-automorphisms of formal power series on several indeterminates and with coefficients over the ring R

open access: yesSelecciones Matemáticas, 2022
In this paper, we show a way to characterize the R-automorphisms of formal power series on several indeterminates and with coefficients over a commutative ring with identity, R.
Soledad Ramírez C.   +1 more
doaj   +1 more source

A birational description of the minimal exponent

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 2, August 2026.
Abstract We give a description of the minimal exponent of a hypersurface using higher direct images of suitably twisted sheaves of log forms on a log resolution.
Qianyu Chen, Mircea Mustaţă
wiley   +1 more source

On Group Codes Over Elementary Abelian Groups

open access: yesSultan Qaboos University Journal for Science, 2003
For group codes over elementary Abelian groups we present definitions of the generator and the parity check matrices, which are matrices over the ring of endomorphism of the group.
Adnan A. Zain
doaj   +1 more source

Injective and coherent endomorphism rings relative to some matrices

open access: yesOpen Mathematics, 2023
Let MM be a right RR-module with S=End(MR)S={\rm{End}}\left({M}_{R}). Given two cardinal numbers α\alpha and β\beta and a row-finite matrix A∈RFMβ×α(S)A\in {{\rm{RFM}}}_{\beta \times \alpha }\left(S), SM{}_{S}M is called injective relative to AA if ...
Zeng Yuedi
doaj   +1 more source

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