نتایج جستجو برای: partial isometry

تعداد نتایج: 232771  

Journal: :Comput. Graph. Forum 2010
Maks Ovsjanikov Quentin Mérigot Facundo Mémoli Leonidas J. Guibas

A common operation in many geometry processing algorithms consists of finding correspondences between pairs of shapes by finding structure-preserving maps between them. A particularly useful case of such maps is isometries, which preserve geodesic distances between points on each shape. Although several algorithms have been proposed to find approximately isometric maps between a pair of shapes,...

Journal: :Transactions of the American Mathematical Society 2013

Journal: :Annales Academiae Scientiarum Fennicae Mathematica 2014

Journal: :Discrete & Computational Geometry 2006

Journal: :Duke Mathematical Journal 2013

Journal: :Aequationes Mathematicae 2023

Abstract We determine the 6-dimensional nilpotent metric Lie algebras such that algebra $${\mathfrak {n}}$$ n has a descending series of ideals invariant under all automorphisms and dimension consecutive members decreases by one. call them having framing determined ideals. classify isometry equivalence classe...

2012
Linfan Mao Linfan MAO Junliang Cai Yanxun Chang Xiaodong Hu Xueliang Li Guodong Liu

A pseudo-Euclidean space (R, μ) is such a Euclidean space R associated with a mapping μ : − → V x → x − → V for x ∈ R, and a linear isometry T : (R, μ) → (R, μ) is such a linear isometry T : R → R that Tμ = μT . In this paper, we characterize curvature of s-line, particularly, Smarandachely embedded graphs and determine linear isometries on (R, μ).

1999
A. Zeghib

This is part II of a series on noncompact isometry groups of Lorentz manifolds. We have introduced in part I, a compactification of these isometry groups, and called “bipolarized” those Lorentz manifolds having a “trivial ” compactification. Here we show a geometric rigidity of non-bipolarized Lorentz manifolds; that is, they are (at least locally) warped products of constant curvature Lorentz ...

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