Results 41 to 50 of about 1,397 (85)

Extrinsic curvatures of distributions of arbitrary codimension

, 2010
In this article, using the generalized Newton transformation, we define higher order mean curvatures of distributions of arbitrary codimension and we show that they agree with the ones from Brito and Naveira (Ann. Global Anal. Geom.
Alías, Andrzejewski, Asimow, Barbosa, Brinzanescu, Brito, Brito, Brito, Cao, Grosjean, Krzysztof Andrzejewski, Paweł G. Walczak, Ranjan, Rosenberg, Rovenski, Svensson, Walczak, Zeghib   +17 more
core   +1 more source

Diffeomorphisms of Stein structures

, 2006
We prove that a pseudoholomorphic diffeomorphism between two almost complex manifolds with boundaries satisfying some pseudoconvexity type condition cannot map a pseudoholomorphic disc in the boundary to a single point.
Diederich, Klas, Sukhov, Alexandre
core   +2 more sources

An a priori C0-estimate for the Fu-Yau equation on compact almost astheno-Kähler manifolds

Complex Manifolds, 2022
We investigate the Fu-Yau equation on compact almost astheno-Kähler manifolds and show an a priori C0-estiamte for a smooth solution of the equation.
Kawamura Masaya
doaj   +1 more source

Geometry of Warped Product Semi-Invariant Submanifolds of a Locally Riemannian Product Manifold [PDF]

, 2009
2000 Mathematics Subject Classification: 53C42, 53C15.In this article, we have studied warped product semi-invariant submanifolds in a locally Riemannian product manifold and introduced the notions of a warped product semi-invariant submanifold.
Atçeken, Mehmet
core  

Prolongations of F‐structure to the tangent bundle of order 2

, 1991
International Journal of Mathematics and Mathematical Sciences, Volume 16, Issue 1, Page 201-204, 1993.
Lovejoy S. Das
wiley   +1 more source

On Almost Generalized Weakly Symmetric LP-Sasakian Manifolds

Annals of the West University of Timisoara: Mathematics and Computer Science, 2017
The purpose of this paper is to introduce the notions of an almost generalized weakly symmetric LP-Sasakian manifolds and an almost generalized weakly Ricci-symmetric LP-Sasakian manifolds.
Baishya Kanak Kanti, Chowdhury Partha Roy   +1 more
doaj   +1 more source

Legendrian graphs generated by Tangential Families [PDF]

, 2004
We construct a Legendrian version of Envelope theory. A tangential family is a 1-parameter family of rays emanating tangentially from a smooth plane curve.
Capitanio, Gianmarco
core   +2 more sources

Pseudo-holomorphic curves: A very quick overview

Complex Manifolds, 2020
This is a review article on pseudo-holomorphic curves which attempts at touching all the main analytical results. The goal is to make a user friendly introduction which is accessible to those without an analytical background.
Oliveira Gonçalo
doaj   +1 more source

Canonical submersions in nearly Kähler geometry

Complex Manifolds
We explore submersions introduced by reducible holonomy representations of connections with parallel skew torsion. A submersion theorem extending previous, less general, results is given. As our main application, we show that parallel 3-(α,δ)\left(\alpha
Stecker Leander
doaj   +1 more source

Classification of contact structures associated with the CR-structure of the complex indicatrix

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
By regarding the complex indicatrix as an embedded CR-hypersurface of the holomorphic tangent bundle in a fixed point, we analyze some aspects of the relations between its CR structure and the considered contact structure.
Popovici Elena
doaj   +1 more source