In mathematics, a vector bundle is said to be flat if it is endowed with a linear connection with vanishing curvature, i.e. a flat connection. Let π :...
3 KB (417 words) - 22:26, 21 September 2021
vector bundles, the Levi-Civita connection on the tangent bundle of a pseudo-Riemannian manifold, which gives a standard way to differentiate vector fields...
45 KB (8,674 words) - 23:09, 1 January 2025
values in some vector bundle E over M. Ordinary differential forms can be viewed as R-valued differential forms. An important case of vector-valued differential...
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Simpson. A Higgs bundle can be thought of as a "simplified version" of a flat holomorphic connection on a holomorphic vector bundle, where the derivative...
4 KB (548 words) - 10:45, 28 May 2025
tangent bundle of a differentiable manifold M {\displaystyle M} is a manifold T M {\displaystyle TM} which assembles all the tangent vectors in M {\displaystyle...
17 KB (2,949 words) - 23:44, 2 May 2025
vector bundle is a (holomorphic or algebraic) vector bundle that is stable in the sense of geometric invariant theory. Any holomorphic vector bundle may...
14 KB (1,887 words) - 04:43, 20 July 2023
a certain vector bundle over a base space S of a family of algebraic varieties V s {\displaystyle V_{s}} . The fibers of the vector bundle are the de...
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Coherent sheaf (redirect from Vector bundle over a ringed space)
information. Coherent sheaves can be seen as a generalization of vector bundles. Unlike vector bundles, they form an abelian category, and so they are closed under...
40 KB (6,934 words) - 00:04, 8 June 2025
any fiber bundle associated to P {\displaystyle P} via the associated bundle construction. In particular, on any associated vector bundle the principal...
20 KB (3,436 words) - 15:33, 16 March 2025
canonical bundle of a non-singular algebraic variety V {\displaystyle V} of dimension n {\displaystyle n} over a field is the line bundle Ω n = ω {\displaystyle...
16 KB (2,548 words) - 15:55, 15 January 2025
Nonabelian Hodge correspondence (category Vector bundles)
to a vector bundle with flat connection as follows. The universal cover X ^ {\displaystyle {\hat {X}}} of X {\displaystyle X} is a principal bundle over...
31 KB (5,131 words) - 02:41, 29 March 2025
{\displaystyle GL(n)} -bundle, the frame bundle. In particular, every smooth manifold has a canonical vector bundle, the tangent bundle. For a Lie group G...
20 KB (2,576 words) - 06:58, 26 June 2023
In mathematics, a Killing vector field (often called a Killing field), named after Wilhelm Killing, is a vector field on a pseudo-Riemannian manifold...
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Connection (mathematics) (redirect from Connection (fiber bundle))
defines directional derivative for sections of a vector bundle more general than the tangent bundle. Connections also lead to convenient formulations...
19 KB (2,617 words) - 17:10, 15 March 2025
the simplest methods of defining differentiation of the sections of vector bundles. The notion of an affine connection has its roots in 19th-century geometry...
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their current result is a formula that counts the Euler number of a flat vector bundle in terms of vertices of transversal open coverings. Notoriously, the...
11 KB (1,519 words) - 01:39, 4 March 2025
Narasimhan–Seshadri theorem (redirect from Projective flatness)
says that a degree zero holomorphic vector bundle over a Riemann surface is stable if and only if it admits a flat unitary connection compatible with its...
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Affine space (redirect from Point–vector distinction)
flat through the points. Any vector space may be viewed as an affine space; this amounts to "forgetting" the special role played by the zero vector....
48 KB (7,537 words) - 05:07, 13 April 2025
the Chern classes are characteristic classes associated with complex vector bundles. They have since become fundamental concepts in many branches of mathematics...
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Musical isomorphism (redirect from Flat map)
{T} M} . Flat and sharp are mutually inverse isomorphisms of smooth vector bundles, hence, for each p in M, there are mutually inverse vector space isomorphisms...
20 KB (4,149 words) - 16:33, 13 May 2025
Lie algebroid (category Vector bundles)
In mathematics, a Lie algebroid is a vector bundle A → M {\displaystyle A\rightarrow M} together with a Lie bracket on its space of sections Γ ( A ) {\displaystyle...
42 KB (7,376 words) - 23:07, 23 May 2025
Covariant derivative (section Vector fields)
covariant differentiation in a vector bundle by means of what is known today as a Koszul connection or a connection on a vector bundle. Using ideas from Lie algebra...
37 KB (6,453 words) - 04:29, 7 June 2025
and (Nicolaescu 2002, 2003). If M is a Riemannian manifold and E a vector bundle over M, then there is a Laplacian operator acting on the k-forms with...
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Tensor field (section Twisting by a line bundle)
the fiber is a vector space and the tensor bundle is a special kind of vector bundle. The vector bundle is a natural idea of "vector space depending...
26 KB (4,401 words) - 17:09, 26 May 2025
Curvature form (redirect from Flat connection)
canonical vector-valued 1-form on the frame bundle, the torsion Θ {\displaystyle \Theta } of the connection form ω {\displaystyle \omega } is the vector-valued...
5 KB (884 words) - 23:37, 25 February 2025
system of partial differential equations for a connection on a vector bundle or principal bundle. They arise in physics as the Euler–Lagrange equations of...
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Hopf fibration (redirect from Hopf bundle)
real formula for the bundle projection by noting that the fixed unit vector along the z axis, (0,0,1), rotates to another unit vector, ( 2 ( x z + w y )...
36 KB (4,813 words) - 13:13, 9 April 2025
Covariant classical field theory (category Fiber bundles)
manifold M {\displaystyle M} is flat, there are simplifications which remove this subtlety. An associated vector bundle E → π M {\displaystyle E\xrightarrow...
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Beauville–Laszlo theorem (category Vector bundles)
τ, σ), where E is a vector bundle on XR, τ is a trivialization of E over (X \ x)R (i.e., an isomorphism with the trivial bundle O(X - x)R), and σ a trivialization...
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holonomy of connections in vector bundles, holonomy of Cartan connections, and holonomy of connections in principal bundles. In each of these cases, the...
42 KB (5,911 words) - 15:27, 22 November 2024