differential geometry, a branch of mathematics, a Riemannian submersion is a submersion from one Riemannian manifold to another that respects the metrics...
3 KB (467 words) - 10:02, 29 January 2024
\mathbb {R} ^{n}\subset \mathbb {R} ^{m+n}} Local diffeomorphisms Riemannian submersions The projection in a smooth vector bundle or a more general smooth...
11 KB (1,636 words) - 15:10, 28 February 2024
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...
9 KB (1,193 words) - 03:23, 21 February 2024
Riemann curvature tensor Riemannian manifold Riemannian submersion is a map between Riemannian manifolds which is submersion and submetry at the same...
14 KB (2,072 words) - 11:39, 8 January 2023
inequality Riemannian polyhedron Riemannian singular value decomposition Riemannian submanifold Riemannian submersion Riemannian volume form Riemannian wavefield...
4 KB (287 words) - 19:15, 29 November 2023
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...
8 KB (926 words) - 08:17, 19 April 2024
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
Manifold (section Riemannian manifolds)
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...
5 KB (896 words) - 16:51, 3 December 2021
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...
1 KB (245 words) - 04:35, 8 February 2024
students. He made a foundational contribution to the theory of Riemannian submersions, showing how geometric quantities on the total space and on the...
4 KB (471 words) - 18:56, 22 November 2022
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...
9 KB (932 words) - 19:17, 22 February 2022
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
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
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...
8 KB (679 words) - 11:05, 12 February 2024
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...
2 KB (156 words) - 00:18, 12 August 2023
Differential form (section Riemannian manifold)
\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
{\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...
5 KB (884 words) - 18:18, 9 November 2021
theorem on submersions, a proper submersion of manifolds is a fiber bundle, hence codimension/relative dimension 0 immersions/submersions behave like...
23 KB (2,847 words) - 03:48, 17 May 2023
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
Foliation (section Submersions)
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
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
) 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