Results 21 to 30 of about 60,494 (275)
On determinability of idempotent medial commutative quasigroups by their endomorphism semigroups; pp. 81–87 [PDF]
Proceedings of the Estonian Academy of Sciences, 2011 We extend the result of P. Puusemp (Idempotents of the endomorphism semigroups of groups. Acta Comment. Univ. Tartuensis, 1975, 366, 76â104) about determinability of finite Abelian groups by their endomorphism semigroups to finite idempotent medial ...
Alar Leibak, Peeter Puusemp
doaj +1 more source
On the finiteness of the derived equivalence classes of some stable endomorphism rings [PDF]
Mathematische Zeitschrift, 2018 We prove that the stable endomorphism rings of rigid objects in a suitable Frobenius category have only finitely many basic algebras in their derived equivalence class and that these are precisely the stable endomorphism rings of objects obtained by ...
Jenny August
semanticscholar +1 more source
Irreducibility of a free group endomorphism is a mapping torus invariant [PDF]
Commentarii Mathematici Helvetici, 2019 We prove that the property of a free group endomorphism being irreducible is a group invariant of the ascending HNN extension it defines. This answers a question posed by Dowdall-Kapovich-Leininger.
Jean Pierre Mutanguha
semanticscholar +1 more source
Centrally essential endomorphism rings of abelian groups [PDF]
Communications in Algebra, 2019 We study Abelian groups A with centrally essential endomorphism ring If A is a such group which is either a torsion group or a non-reduced group, then the ring is commutative.
O. Lyubimtsev, A. Tuganbaev
semanticscholar +1 more source
Analysis of endomorphisms [PDF]
Journal of Physics: Conference Series, 2012 In this expository article, we discuss the recent progress in the study of endomorphisms and automorphisms of the Cuntz algebras and, more generally graph C* -algebras (or Cuntz-Krieger algebras). In particular, we discuss the definition and properties of both the full and the restricted Weyl group of such an algebra.
CONTI, ROBERTO +2 more
openaire +3 more sources
A Variant of D’Alembert’s Functional Equation on Semigroups with Endomorphisms
Annales Mathematicae Silesianae, 2022 Let S be a semigroup, and let φ, ψ: S → S be two endomorphisms (which are not necessarily involutive). Our main goal in this paper is to solve the following generalized variant of d’Alembert’s functional equation f(xϕ(y))+f(ψ(y)x)=2f(x)f(y), x,y ∈ S,
Akkaoui Ahmed +2 more
doaj +1 more source
The Baer–Kaplansky Theorem for all abelian groups and modules
Bulletin of Mathematical Sciences, 2022 It is shown that the Baer–Kaplansky Theorem can be extended to all abelian groups provided that the rings of endomorphisms of groups are replaced by trusses of endomorphisms of corresponding heaps.
Simion Breaz, Tomasz Brzeziński
doaj +1 more source
Semi-group structure of all endomorphisms of a projective variety admitting a polarized endomorphism [PDF]
, 2018 Let $X$ be a projective variety admitting a polarized (or more generally, int-amplified) endomorphism. We show: there are only finitely many contractible extremal rays; and when $X$ is $\mathbb{Q}$-factorial normal, every minimal model program is ...
Sheng Meng, De-Qi Zhang
semanticscholar +1 more source
Numerical computation of endomorphism rings of Jacobians [PDF]
The Open Book Series, 2018 We give practical numerical methods to compute the period matrix of a plane algebraic curve (not necessarily smooth). We show how automorphisms and isomorphisms of such curves, as well as the decomposition of their Jacobians up to isogeny, can be ...
Nils Bruin +2 more
semanticscholar +1 more source
Geometric and Functional Analysis, 2017 Several open problems concerning Minkowski endomorphisms and Minkowski valuations are solved. More precisely, it is proved that all Minkowski endomorphisms are uniformly continuous but that there exist Minkowski endomorphisms that are not weakly-monotone. This answers questions posed repeatedly by various authors.
openaire +4 more sources