Results 41 to 50 of about 83 (80)

Parabolicity of manifolds [PDF]

open access: yes
This Paper is an introduction to the study of an invariant of Riemannian manifolds related to the non-linear potential theory of the p-Laplacian and which is called its parabolic or hyperbolic type.
Troyanov, Marc
core   +1 more source

© Hindawi Publishing Corp. SKEW-SYMMETRIC VECTOR FIELDS ON A CR-SUBMANIFOLD OF A PARA-KÄHLERIAN MANIFOLD

open access: yes, 2003
We deal with a CR-submanifold M of a para-Kählerian manifold M ̃ , which carries a J-skew-symmetric vector field X. It is shown that X defines a global Hamiltonian of the symplectic form Ω onM and JX is a relative infinitesimal automorphism of Ω.
Radu Rosca, Adela Mihai
core  

A simplified Proof of the Hopf Conjecture

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
The use of the barycentre map between two copies of ℝn , the first one with a metric without conjugate points, the second one with the canonical flat metric, allows to prove in a simplified way the fact that Riemannian tori without conjugate points are ...
Sabatini Luca
doaj   +1 more source

On 3-Dimensional Lorentzian β-Kenmotsu Manifolds

open access: yes, 2009
In this paper, we study Lorentzian β-Kenmotsu manifold satisfying the condition R(X, Y ) · S = 0, where R(X, Y ) is considered as a derivation of the tensor algebra at each point of the manifold of tangent vectors X, Y and S is the Ricci tensor, 3 ...

core  

Gromov-Hausdorff limits of closed surfaces

open access: yesAnalysis and Geometry in Metric Spaces
We completely describe the Gromov-Hausdorff closure of the class of length spaces being homeomorphic to a fixed closed surface.
Dott Tobias
doaj   +1 more source

Rotation Numbers and Isometries

open access: yes, 1997
: Using the notion of rotation set for homeomorphisms of compact manifolds, we define the rotation homomorphism of a connected compact orientable Riemannian manifold and apply it to prove that the dimension of the isometry group of a connected compact ...
Konstantin Athanassopoulos
core  

On generalized measure contraction property and energy functionals over Lipschitz maps

open access: yes, 1999
. We will summarize a part of the result of [10], the construction of Sobolev spaces and energy functionals over maps between metric spaces under the strong measure contraction property of Bishop-Gromov type, which is a generalized notion of Ricci ...
Kazuhiro Kuwae, Takashi Shioya
core  

Product manifolds and the curvature operator of the second kind

open access: yes
Click on the DOI link to access this article at the publishers website (may not be free).We investigate the curvature operator of the second kind on product Riemannian manifolds and obtain some optimal rigidity results.
Li, Xiaolong
core   +1 more source

Plasma Ceramides and Risk of Impaired Lower-Extremity Function in Older Adults: A Nested Case-Control Study. [PDF]

open access: yesJ Gerontol A Biol Sci Med Sci, 2021
Caballero FF   +4 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy