Results 31 to 40 of about 12,561 (233)

Carleson Measures and Logvinenko-Sereda sets on compact manifolds [PDF]

open access: yes, 2013
Given a compact Riemannian manifold $M$ of dimension $m \geq 2$, we study the space of functions of $L^2(M)$generated by eigenfunctions of eigenvalues less than $L \geq 1$ associated to the Laplace-Beltrami operator on $M$.
Bharti Pridhnani   +3 more
core   +1 more source

Cohomology of D-complex manifolds [PDF]

open access: yes, 2012
In order to look for a well-behaved counterpart to Dolbeault cohomology in D-complex geometry, we study the de Rham cohomology of an almost D-complex manifold and its subgroups made up of the classes admitting invariant, respectively anti-invariant ...
Daniele Angella   +4 more
core   +1 more source

Characterizing Humans on Riemannian Manifolds

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2013
In surveillance applications, head and body orientation of people is of primary importance for assessing many behavioral traits. Unfortunately, in this context people are often encoded by a few, noisy pixels so that their characterization is difficult.
TOSATO, DIEGO   +3 more
openaire   +4 more sources

Riemannian submersions From Almost Hermitian Manifolds [PDF]

open access: yes, 2017
In this chapter, we introduce various new Riemannian submersions from almost Hermitian manifolds on to Riemannian manifolds. In section 1, we first review almost Hermitian manifolds and their submanifolds, and give brief information about holomorphic ...
Sahin, Bayram, Bayram Şahin
core   +1 more source

THE RIEMANNIAN MANIFOLD OF ALL RIEMANNIAN METRICS

open access: yesThe Quarterly Journal of Mathematics, 1991
The space of all Riemannian metrics on a smooth second countable finite dimensional manifold is itself a smooth manifold modeled on the space of symmetric (0,2)-tensor fields with compact support. It carries a canonical Riemannian metric which is invariant under the action of the diffeomorphism group.
Gil-Medrano, Olga, Michor, Peter W.
openaire   +3 more sources

Riemannian symmetries in flag manifolds [PDF]

open access: yesArchivum Mathematicum, 2012
Flag manifolds are in general not symmetric spaces. But they are provided with a structure of $\mathbb{Z}_2^k$-symmetric space. We describe the Riemannian metrics adapted to this structure and some properties of reducibility. We detail for the flag manifold $SO(5)/SO(2)\times SO(2) \times SO(1)$ what are the conditions for a metric adapted to the ...
PIU, MARIA PAOLA, REMM ELISABETH
openaire   +3 more sources

Limit theorems for empirical Fréchet means of independent and non-identically distributed manifold-valued random variables [PDF]

open access: yes, 2011
We prove weak laws of large numbers and central limit theorems of Lindeberg type for empirical centres of mass (empirical Fréchet means) of independent nonidentically distributed random variables taking values in Riemannian manifolds.
Huiling Le   +3 more
core   +1 more source

Semi-Slant Submersions from Almost Product Riemannian Manifolds

open access: yesDemonstratio Mathematica, 2016
In this paper, we introduce semi-slant submersions from almost product Riemannian manifolds onto Riemannian manifolds. We give some examples, investigate the geometry of foliations which are arisen from the definition of a Riemannian submersion.
Gündüzalp Yılmaz
doaj   +1 more source

Application of the Generalized Bochner Technique to the Study of Conformally Flat Riemannian Manifolds

open access: yesMathematics, 2021
In this article, we discuss the global aspects of the geometry of locally conformally flat (complete and compact) Riemannian manifolds. In particular, the article reviews and improves some results (e.g., the conditions of compactness and degeneration ...
Josef Mikeš   +3 more
doaj   +1 more source

Riemannian Maps From Almost Hermitian Manifolds [PDF]

open access: yes, 2017
In this chapter, we study Riemannian maps from almost Hermitian manifolds to Riemannian manifolds. In section 1, we study holomorphic Riemannian maps as a generalization of holomorphic submersions and obtain a characterization of such maps. In section 2,
Sahin, Bayram, Bayram Şahin
core   +1 more source

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