Results 61 to 70 of about 16,878 (163)
Four‐Dimensional pp‐Wave Lie Groups and Harmonic Curvature
Mathematische Nachrichten, Volume 299, Issue 7, Page 1751-1780, July 2026.ABSTRACT We determine all four‐dimensional Lie groups which have harmonic curvature. In parallel, a description of four‐dimensional pp‐wave Lie groups is obtained.
E. García‐Río +2 more
wiley +1 more source
Modules over endomorphism rings [PDF]
, 2009 An extensive synthesis of recent work in the study of endomorphism rings and their ...
Theodore G. Faticoni +1 more
core +1 more source
Tate modules as condensed modules
Bulletin of the London Mathematical Society, Volume 58, Issue 7, July 2026.Abstract We prove that the category of countable Tate modules over an arbitrary discrete ring embeds fully faithfully into that of condensed modules. If the base ring is of finite type, we characterize the essential image as generated by the free module of infinite countable rank under direct sums, duals and retracts.
Valerio Melani +2 more
wiley +1 more source
A topological characterisation of endomorphism monoids of countable structures [PDF]
, 2015 A topological monoid is isomorphic to an endomorphism monoid of a countable structure if and only if it is separable and has a compatible complete ultrametric such that composition from the left is non-expansive.
M. Bodirsky, Friedrich Martin Schneider
semanticscholar +1 more source
The endomorphism semiring of a semilattice [PDF]
, 2009 We prove that the endomorphism semiring of a nontrivial semilattice is always subdirectly irreducible and describe its monolith. The endomorphism semiring is congruence simple if and only if the semilattice has both a least and a largest ...
Maróti, Miklós, Jezek, J., Kepka, T.
core +1 more source
Commutative Endomorphism Rings [PDF]
, 1971 The problem of classifying the torsion-free abelian groups with commutative endomorphism rings appears as Fuchs’ problems in [4, Problems 46 and 47].
J. Zelmanowitz
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
Endomorphism—Regularity of Split Graphs [PDF]
, 2001 In this paper, split graphs with a regular endomorphism monoid are characterized ...
Chen, Jianfei +3 more
core +1 more source
Structure of a linear endomorphism [PDF]
, 2022 Given an n-dimensional vector space V over a field K, it is proved that if f is an endomorphism of V whose characteristic polynomial has its n roots in K, then f has a Jordan canonical form.
Vale Gonsalves, María Jesús
core
Convex delay endomorphisms [PDF]
Communications in Mathematical Physics, 1995 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rovella, A., Vilamajó, F.
openaire +2 more sources