• differential geometry, a branch of mathematics, a Riemannian submersion is a submersion from one Riemannian manifold to another that respects the metrics...
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  • \mathbb {R} ^{n}\subset \mathbb {R} ^{m+n}} Local diffeomorphisms Riemannian submersions The projection in a smooth vector bundle or a more general smooth...
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  • Sub-Riemannian manifold Riemannian submanifold Riemannian metric Riemannian circle Riemannian submersion Riemannian Penrose inequality Riemannian holonomy Riemann...
    669 bytes (98 words) - 12:21, 14 December 2010
  • Berger's sphere (category Riemannian geometry)
    induced Riemannian metric on the quotient space, which is naturally diffeomorphic to M. The Hopf fibration S3 → S2 is a Riemannian submersion relative...
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  • Riemann curvature tensor Riemannian manifold Riemannian submersion is a map between Riemannian manifolds which is submersion and submetry at the same...
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  • inequality Riemannian polyhedron Riemannian singular value decomposition Riemannian submanifold Riemannian submersion Riemannian volume form Riemannian wavefield...
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  • Soul theorem (category Theorems in Riemannian geometry)
    established the more powerful fact that Sharafutdinov's retraction is a Riemannian submersion, and even a submetry. Cheeger & Ebin 2008, Chapter 8; Petersen 2016...
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  • Thumbnail for Projection (linear algebra)
    projection is when W is a subspace of V. In Riemannian geometry, this is used in the definition of a Riemannian submersion. Centering matrix, which is an example...
    34 KB (5,802 words) - 21:53, 28 April 2024
  • Thumbnail for Manifold
    leading to notions of isometric embeddings, isometric immersions, and Riemannian submersions; a basic result is the Nash embedding theorem. A basic example of...
    68 KB (9,504 words) - 02:30, 19 May 2024
  • Sasakian manifold (category Riemannian geometry)
    metric, in a manner that makes the projection from S to M into a Riemannian submersion. (For example, it follows that there exist Sasaki–Einstein metrics...
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  • Sasaki metric (category Riemannian manifolds)
    τ : T M → M {\displaystyle \tau \colon \mathrm {T} M\to M} is a Riemannian submersion. The metric on each tangent space T p ⊂ T M {\displaystyle \mathrm...
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  • Thumbnail for Barrett O'Neill
    students. He made a foundational contribution to the theory of Riemannian submersions, showing how geometric quantities on the total space and on the...
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  • Splitting theorem (category Theorems in Riemannian geometry)
    the de Rham decomposition theorem. Alternatively, the theory of Riemannian submersions may be invoked. As a consequence of their splitting theorem, Cheeger...
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  • Thumbnail for Maps of manifolds
    leading to notions of isometric embeddings, isometric immersions, and Riemannian submersions; a basic result is the Nash embedding theorem. A basic example of...
    5 KB (558 words) - 17:49, 29 January 2024
  • Thumbnail for Grigori Perelman
    who is known for his contributions to the fields of geometric analysis, Riemannian geometry, and geometric topology. In 2005, Perelman abruptly quit his...
    65 KB (6,446 words) - 07:02, 18 May 2024
  • Thumbnail for Differentiable manifold
    given a (non-Riemannian) pseudo-Riemannian structure; there are topological restrictions on doing so. The terminology for pseudo-Riemannian manifold varies...
    67 KB (9,509 words) - 13:12, 2 October 2023
  • class Chern class Pontrjagin class spin structure differentiable map submersion immersion Embedding Whitney embedding theorem Critical value Sard's theorem...
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  • Sharafutdinov's retraction (category Riemannian geometry)
    non-negatively curved Riemannian manifold onto its soul. It was first used by Sharafutdinov to show that any two souls of a complete Riemannian manifold with...
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  • \wedge \beta +(-1)^{k}\alpha \wedge d\beta .} On a Riemannian manifold, or more generally a pseudo-Riemannian manifold, the metric defines a fibre-wise isomorphism...
    66 KB (9,950 words) - 14:18, 10 February 2024
  • Thumbnail for Fiber bundle
    {\displaystyle B.} The map π , {\displaystyle \pi ,} called the projection or submersion of the bundle, is regarded as part of the structure of the bundle. The...
    29 KB (4,084 words) - 09:22, 2 April 2024
  • Harmonic morphism (category Riemannian geometry)
    G} the standard Riemannian fibration ϕ : G / H → G / K {\displaystyle \phi :G/H\to G/K} is a harmonic morphism. Riemannian submersions with minimal fibres...
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  • Thumbnail for Immersion (mathematics)
    theorem on submersions, a proper submersion of manifolds is a fiber bundle, hence codimension/relative dimension 0 immersions/submersions behave like...
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  • Einstein metrics with prescribed conformal infinity Robert Bryant, Riemannian Submersions as PDE Greg Galloway, Stability of marginally trapped surfaces with...
    27 KB (2,867 words) - 16:10, 17 February 2024
  • Thumbnail for Foliation
    is a submersion allowing the following Definition. Let M and Q be manifolds of dimension n and q≤n respectively, and let f : M→Q be a submersion, that...
    70 KB (8,140 words) - 01:31, 24 April 2024
  • Thumbnail for Differential topology
    special kinds of smooth mappings between manifolds, namely immersions and submersions, and the intersections of submanifolds via transversality. More generally...
    15 KB (1,837 words) - 18:20, 27 July 2023
  • is nonzero). The statement in the first case is a special case of the submersion theorem. These variants are restatements of the inverse functions theorem...
    37 KB (6,894 words) - 05:50, 7 April 2024
  • Thumbnail for Diffeomorphism
    ) is surjective, f {\displaystyle f} is said to be a submersion (or, locally, a "local submersion"); and if D f {\displaystyle Df} (or, locally, D f x...
    25 KB (4,165 words) - 15:27, 23 February 2024
  • function theorem § Implicit function theorem. Another consequence is the submersion theorem. A partition of an interval [ a , b ] {\displaystyle [a,b]} is...
    56 KB (11,443 words) - 09:40, 7 November 2023
  • natural projection π : P → P / G {\displaystyle \pi :P\to P/G} is a smooth submersion, and P {\displaystyle P} is a smooth principal G {\displaystyle G} -bundle...
    20 KB (3,314 words) - 01:43, 21 March 2024
  • Glossary of general topology Glossary of algebraic topology Glossary of Riemannian and metric geometry. See also: List of differential geometry topics Words...
    6 KB (775 words) - 17:50, 11 January 2023