Results 71 to 80 of about 5,894 (213)
Centralizers in endomorphism rings
Journal 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).
Drensky, Vesselin +2 more
openaire +3 more sources
End-regular and End-orthodox generalized lexicographic products of bipartite graphs
Open Mathematics, 2016 A graph X is said to be End-regular (End-orthodox) if its endomorphism monoid End(X) is a regular (orthodox) semigroup. In this paper, we determine the End-regular and the End-orthodox generalized lexicographic products of bipartite graphs.
Gu Rui, Hou Hailong
doaj +1 more source
Kuga–Satake Construction on Families of K3 Surfaces of Picard Rank 14
Mathematische Nachrichten, Volume 299, Issue 8, Page 1894-1916, August 2026.ABSTRACT The isometry between the type IV6 and the type II4 hermitian symmetric domains suggests a possible relation between suitable moduli spaces of K3 surfaces of Picard rank 14 and of polarized abelian 8‐folds with totally definite quaternion multiplication. We show how this isometry induces a geometrically meaningful map between such moduli spaces
Flora Poon
wiley +1 more source
MODULES WITH ABELIAN ENDOMORPHISM RINGS
, 2010 The results of Szele and Szendrei [‘On Abelian groups with commutative endomorphism rings’, Acta Math. Acad. Sci. Hungar.2 (1951), 309–324] characterizing abelian groups with commutative endomorphism rings are generalized to modules whose endomorphism ...
GRIGORE CĂLUGĂREANU, PHILL SCHULTZ
core +1 more source
Mass endomorphism, surgery and perturbations [PDF]
, 2010 We prove that the mass endomorphism associated to the Dirac operator on a Riemannian manifold is non-zero for generic Riemannian metrics. The proof involves a study of the mass endomorphism under surgery, its behavior near metrics with harmonic spinors ...
Humbert, Emmanuel +3 more
core +1 more source
On (σ, δ)(S, 1) rings and their extensions [PDF]
Mathematica Moravica, 2017 Let R be a ring, σ an endomorphism of R and δ a σ derivation of R. We recall that R is called an (S, 1)-ring if for a, b _ R, ab = 0 implies aRb = 0. We involve σ and δ to generalize this notion and say that R is a (σ, δ) - (S, 1) ring if for a, b _ R ...
Bhat Kumar Vijay
doaj
MORPHOLOGICAL DIFFERENTIATION AND SPORT RESULTS OF MALE AND FEMALE WEIGHTLIFTERS
Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports, 2015 Purpose of this study was to analyze the types of body structure of elite Polish weightlifters of both genders, depending on their sports’ achievements.
Jerzy Saczuk, Agnieszka Wasiluk
doaj +1 more source
Intrinsic Shape LDA With Application to Body Human Shapes Classification
Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 4, August 2026.ABSTRACT Advancements in 3D scanning and cloud infrastructure enable the acquisition and analysis of high‐density body surface datasets. In this work, we propose a novel methodology that extends linear discriminant analysis (LDA) to Kendall's shape space for the classification of 3D objects, specifically human body shapes.
Jorge Valero +3 more
wiley +1 more source
Endomorphisms of linear automata
Journal of Computer and System Sciences, 1978 AbstractRelationships between the semigroup, End M, of endomorphisms of a linear automaton M and the structure of M are determined. It is shown that M is strongly connected if and only if End M is a group of translations. If M is not strongly connected, conditions are found as to when End M contains only linear transformations.
Carlton J. Maxson, Kirby C. Smith
openaire +3 more sources
Endomorphisms of the Cuntz algebras [PDF]
Banach Center Publications, 2011 2 figures, uses pictex, to appear in the Proceedings of the Workshop on Noncommutative Harmonic Analysis, Bedlewo ...
R. Conti, J. H. Hong, W. Szymański
openaire +4 more sources