Natural vector fields on tangent bundles
Naturally reductive homogeneous spaces and generalized Heisenberg groups
Naturally reductive homogeneous -metric spaces
In the present paper we study naturally reductive homogeneous -metric spaces. We show that for homogeneous -metric spaces, under a mild condition, the two definitions of naturally reductive homogeneous Finsler space, given in the literature, are equivalent. Then, we compute the flag curvature of naturally reductive homogeneous -metric spaces.
Nature of the central singularity in Szekeres models
The occurrence and nature of the central naked singularity in aspherical Szekeres models is investigated here, and the strength of the singularity is discussed. The implications for the cosmic censorship hypothesis are considered.
Natürlich-kinematische Erzeugung isophotischer Elementscharen aus ebensolchen bei klassischer geometrischer Zentralbeleuchtung
Nearly Kähler and nearly parallel -structures on spheres
In some other context, the question was raised how many nearly Kähler structures exist on the sphere equipped with the standard Riemannian metric. In this short note, we prove that, up to isometry, there exists only one. This is a consequence of the description of the eigenspace to the eigenvalue of the Laplacian acting on -forms. A similar result concerning nearly parallel -structures on the round sphere holds, too. An alternative proof by Riemannian Killing spinors is also indicated.
Necessary and sufficient conditions for unique determination of plane domains.
Necessary conditions for local convexifiability of pseudoconvex domains in
Negative Curvature and Embedded Eigenvalues.
Negatively 1/4-pinched riemannian metric on a compact Kähler manifold.
Negatively curved metrics on Kaira surfaces.
Neifeld’s Connection Inducedon the Grassmann Manifold
The work concerns to investigations in the field of differential geometry. It is realized by a method of continuations and scopes of G. F. Laptev which generalizes a moving frame method and Cartan’s exterior forms method and depends on calculation of exterior differential forms. The Grassmann manifold (space of all -planes) is considered in the -dimensional projective space . Principal fiber bundle of tangent linear frames is arised above this manifold. Typical fiber of the principal fiber bundle...
Neighbourhoods of independence and associated geometry in manifolds of bivariate Gaussian and Freund distributions
We provide explicit information geometric tubular neighbourhoods containing all bivariate distributions sufficiently close to the cases of independent Poisson or Gaussian processes. This is achieved via affine immersions of the 4-manifold of Freund bivariate distributions and of the 5-manifold of bivariate Gaussians. We provide also the α-geometry for both manifolds. The Central Limit Theorem makes our neighbourhoods of independence limiting cases for a wide range of bivariate distributions; the...
Nejsymetričtější variety
Nekotorye ponyatiya i sootnosheniya kinematiche skoi geometrii
Netradiční integrální geometrie
Nets on a Riemannian manifold and finite-dimensional approximations of the Laplacian [Book]
Neue Erzeugungen der Minmalflächen von G. Thomsen.
Neumann and second boundary value problems for hessian and Gauß curvature flows
Neure Resultate der Theorie der Strahlensysteme