Results 41 to 50 of about 320,618 (278)
Computer Vision and Pattern Recognition, 2015 This paper presents a method named Discriminant Analysis on Riemannian manifold of Gaussian distributions (DARG) to solve the problem of face recognition with image sets.
Ruiping Wang +3 more
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Geometrical Analysis on Submanifolds in Riemannian Manifolds Attached with Silver Structure
AxiomsIn this paper, we analyze a silver Riemannian structure on a Riemannian manifold. We compute some fundamental properties of the induced structure on submanifolds immersed in a silver Riemannian manifold and also obtain some results for induced structures
Shadab Ahmad Khan +4 more
doaj +1 more source
Poisson Structures for PDEs Associated with Diffeomorphism Groups [PDF]
, 2004 We study Poisson and Lie-Poisson structures on the diffeomorphism groups with a smooth metric spray in connection with dynamics of nonlinear PDEs. In particular, we provide a precise analytic sense in which the time t map for the Euler equations of an ...
Vasylkevych, Sergiy
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Geometry of concircular curvature tensor of Nearly Kahler manifold
Tikrit Journal of Pure Science, 2023 In this paper, we study the necessary condition where a nearly Kahler manifold of flat concircular tensor has been found. And the relationship between these invariants and additional properties of symmetry concircular tensor, as well as geometrical ...
Taha H. Jasim +2 more
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Face video retrieval with image query via hashing across Euclidean space and Riemannian manifold
Computer Vision and Pattern Recognition, 2015 Retrieving videos of a specific person given his/her face image as query becomes more and more appealing for applications like smart movie fast-forwards and suspect searching.
Yan Li +4 more
semanticscholar +1 more source
Biharmonic maps from a complete Riemannian manifold into a non-positively curved manifold [PDF]
, 2013 We consider biharmonic maps $$\phi :(M,g)\rightarrow (N,h)$$ϕ:(M,g)→(N,h) from a complete Riemannian manifold into a Riemannian manifold with non-positive sectional curvature. Assume that $$ p $$p satisfies $$ 2\le p
S. Maeta
semanticscholar +1 more source
Low Dimensional Flat Manifolds with Some Elasses of Finsler Metric
پژوهشهای ریاضی, 2020 Introduction An -dimensional Riemannian manifold is said to be flat (or locally Euclidean) if locally isometric with the Euclidean space, that is, admits a covering of coordinates neighborhoods each of which is isometric with a Euclidean domain.
Sedigheh Alavi Endrajemi +1 more
doaj
Weakly Convex Optimization over Stiefel Manifold Using Riemannian Subgradient-Type Methods
SIAM Journal on Optimization, 2019 We consider a class of nonsmooth optimization problems over the Stiefel manifold, in which the objective function is weakly convex in the ambient Euclidean space. Such problems are ubiquitous in engineering applications but still largely unexplored.
Xiao Li +5 more
semanticscholar +1 more source
Biharmonic Submanifolds in a Riemannian Manifold with Non-Positive Curvature [PDF]
Results in Mathematics, 2011 In this paper, we show that, for every biharmonic submanifold (M, g) of a Riemannian manifold (N, h) with non-positive sectional curvature, if \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage ...
Nobumitsu Nakauchi, H. Urakawa
semanticscholar +1 more source
A spinorial energy functional: Critical points and gradient flow
, 2012 On the universal bundle of unit spinors we study a natural energy functional whose critical points, if dimM C 3, are precisely the pairs (g,φ) consisting of a Ricci-flat Riemannian metric g together with a parallel g-spinor φ.
Hartmut Weiss +5 more
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