Results 31 to 40 of about 3,925 (113)
Journal of Mathematics, Volume 2026, Issue 1, 2026.This paper investigates the complete lift of para‐Sasakian structures to the tangent bundle equipped with the Schouten–van Kampen connection (SVKC). By analyzing curvature tensors and soliton equations, we establish the existence of Ricci, Yamabe, and η‐Ricci solitons in the lifted setting.
Lalnunenga Colney +3 more
wiley +1 more source
Construction of an A-manifold on a principal torus bundle
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2013 We construct a new example of an A-manifold, i.e. a Riemannian manifold with cyclic-parallel Ricci tensor. This condition can be viewed as a generalization of the Einstein condition.
Grzegorz Zborowski
doaj
FLRW cosmology in Weyl-Integrable Space-Time
, 2011 We investigate the Weyl space-time extension of general relativity (GR) for studying the FLRW cosmology through focusing and defocusing of the geodesic congruences.
Dadhich, Naresh +2 more
core +1 more source
Rigidity for Multi-Taub-NUT metrics [PDF]
, 2009 This paper provides a classification result for gravitational instantons with cubic volume growth and cyclic fundamental group at infinity. It proves that a complete hyperk\"ahler manifold asymptotic to a circle fibration over the Euclidean three-space ...
Minerbe, Vincent
core +3 more sources
Conformal pure radiation with parallel rays
, 2011 We define pure radiation metrics with parallel rays to be n-dimensional pseudo-Riemannian metrics that admit a parallel null line bundle K and whose Ricci tensor vanishes on vectors that are orthogonal to K.
Leistner, Thomas, Nurowski, Pawel
core +1 more source
Nonnegatively curved Euclidean submanifolds in codimension two
, 2016 We provide a classification of compact Euclidean submanifolds $M^n\subset{\mathbb{R}}^{n+2}$ with nonnegative sectional curvature, for $n\ge 3$. The classification is in terms of the induced metric (including the diffeomorphism classification of the ...
Florit, Luis A., Ziller, Wolfgang
core +1 more source
Construction of an A-manifold on a principal torus bundle
, 2012 We construct a new example of an A-manifold, i.e. a Riemannian manifold with a cyclic-parallel Ricci tensor, which can be viewed as a generalization of the Einstein condition.
Zborowski, Grzegorz
core +1 more source
D'Atri spaces and the total scalar curvature of hemispheres, tubes and cylinders. [PDF]
Rev Mat Complut, 2023 Csikós B, Elnashar A, Horváth M.
europepmc +1 more source
TubULAR: tracking in toto deformations of dynamic tissues via constrained maps. [PDF]
Nat Methods, 2023 Mitchell NP, Cislo DJ.
europepmc +1 more source
Decay of the Weyl curvature in expanding black hole cosmologies. [PDF]
Ann PDE, 2022 Schlue V.
europepmc +1 more source