Results 51 to 60 of about 55,047 (231)

Prime ideal on the end_Z (Z^n ) Ring

open access: yesAl-Jabar, 2022
The set of all endomorphisms over -module  is a non-empty set denoted by . From  we can construct the ring of  over addition and composition function. The prime ideal is an ideal which satisfies the properties like the prime numbers.
Zakaria Bani Ikhtiyar   +2 more
doaj   +1 more source

An inner automorphism is only an inner automorphism, but an inner endomorphism can be something strange [PDF]

open access: yes, 2011
The inner automorphisms of a group G can be characterized within the category of groups without reference to group elements: they are precisely those automorphisms of G that can be extended, in a functorial manner, to all groups H given with ...
Bergman, George M.
core   +4 more sources

Endomorphisms of graph algebras

open access: yesJournal of Functional Analysis, 2012
We initiate a systematic investigation of endomorphisms of graph C*-algebras C*(E), extending several known results on endomorphisms of the Cuntz algebras O_n. Most but not all of this study is focused on endomorphisms which permute the vertex projections and globally preserve the diagonal MASA D_E of C*(E).
CONTI, ROBERTO   +2 more
openaire   +4 more sources

Principally Quasi-Injective Semimodules

open access: yesمجلة بغداد للعلوم, 2019
In this work, the notion of principally quasi- injective semimodule is introduced, discussing the conditions needed to get properties and characterizations similar or related to the case in modules.
Aljebory et al.
doaj   +1 more source

Instanton Floer homology and the Alexander polynomial [PDF]

open access: yes, 2010
The instanton Floer homology of a knot in the three-sphere is a vector space with a canonical mod 2 grading. It carries a distinguished endomorphism of even degree,arising from the 2-dimensional homology class represented by a Seifert surface.
Available Tomasz   +5 more
core   +3 more sources

Endomorphisms of the binomial coalgebra

open access: yesJournal of Pure and Applied Algebra, 2004
Let \(R\) be a commutative unital ring and \(B_1\) a free \(R\)-module with an infinitely countable base \(e_n\), \(n\geqslant 0\). Then \(B_1\) is a coalgebra with comultiplication \[ \Delta(e_n)=\sum_{i=0}^n{n\choose i}e_i\otimes e_{n-i} \] and counit \(\varepsilon(e_n)=\delta_{n0}\).
Salinier, Alain, Heraoua, Mériem
openaire   +3 more sources

On periodic points of free inverse monoid endomorphisms

open access: yes, 2012
It is proved that the periodic point submonoid of a free inverse monoid endomorphism is always finitely generated. Using Chomsky's hierarchy of languages, we prove that the fixed point submonoid of an endomorphism of a free inverse monoid can be ...
Rodaro, Emanuele, Silva, Pedro V.
core   +1 more source

The centralizer of a group endomorphism

open access: yesJournal of Algebra, 1979
AbstractLet A be an endomorphism on a finite group G. The structure of the nearring l(A) of identity preserving functions f: G → G which commute with A is investigated.
Kirby C. Smith, Carlton J. Maxson
openaire   +3 more sources

A universality result for endomorphism monoids of some ultrahomogeneous structures

open access: yes, 2011
We devise a fairly general sufficient condition ensuring that the endomorphism monoid of a countably infinite ultrahomogeneous structure (i.e. a Fra\"{\i}ss\'{e} limit) embeds all countable semigroups.
Dolinka, Igor, Mašulović, Dragan
core   +1 more source

Centralizers in endomorphism rings

open access: yesJournal of Algebra, 2010
We prove that the centralizer Cen(f) in Hom_R(M,M) of a nilpotent endomorphism f of a finitely generated semisimple left R-module M (over an arbitrary ring R) is the homomorphic image of the opposite of a certain Z(R)-subalgebra of the full m x m matrix algebra M_m(R[z]), where m is the dimension (composition length) of ker(f).
Leon van Wyk   +2 more
openaire   +3 more sources

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