• field of differential geometry, the exterior covariant derivative is an extension of the notion of exterior derivative to the setting of a differentiable...
    19 KB (2,816 words) - 06:18, 20 December 2024
  • the exterior derivative extends the concept of the differential of a function to differential forms of higher degree. The exterior derivative was first...
    21 KB (3,307 words) - 05:23, 22 February 2025
  • mathematics, the covariant derivative is a way of specifying a derivative along tangent vectors of a manifold. Alternatively, the covariant derivative is a way...
    37 KB (6,453 words) - 09:24, 15 May 2025
  • must be linear. A linear connection is equivalently specified by a covariant derivative, an operator that differentiates sections of the bundle along tangent...
    45 KB (8,674 words) - 23:09, 1 January 2025
  • product rule. The Lie derivative is another derivative that is covariant under basis transformations. Like the exterior derivative, it does not depend on...
    46 KB (7,275 words) - 03:10, 13 January 2025
  • In physics, the gauge covariant derivative is a means of expressing how fields vary from place to place, in a way that respects how the coordinate systems...
    25 KB (4,484 words) - 06:31, 14 April 2025
  • Thumbnail for Torsion tensor
    +\omega \wedge \theta .} Equivalently, Θ = Dθ, where D is the exterior covariant derivative determined by the connection. The torsion form is a (horizontal)...
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  • Thumbnail for Exterior algebra
    the exterior derivative gives the exterior algebra of differential forms on a manifold the structure of a differential graded algebra. The exterior derivative...
    77 KB (12,118 words) - 20:04, 2 May 2025
  • and a vector field, the Lie derivative of a differential form with respect to a vector field and the covariant derivative of a differential form with...
    67 KB (10,058 words) - 03:02, 23 March 2025
  • torsion-free covariant derivative, known as the Levi-Civita connection. See also gauge covariant derivative for a treatment oriented to physics. The exterior covariant...
    23 KB (3,555 words) - 00:36, 17 February 2025
  • tensor fields: Lie derivatives, derivatives with respect to connections, the exterior derivative of totally antisymmetric covariant tensors, i.e. differential...
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  • Thumbnail for Penrose graphical notation
    determinant is formed by applying antisymmetrization to the indices. The covariant derivative ( ∇ {\displaystyle \nabla } ) is represented by a circle around the...
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  • +\omega \wedge \theta =D\theta ,} where as above D denotes the exterior covariant derivative. The first Bianchi identity takes the form D Θ = Ω ∧ θ . {\displaystyle...
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  • Thumbnail for Covariance and contravariance of vectors
    and a covariant vector is a list of numbers that transforms in the same way. Contravariant vectors are often just called vectors and covariant vectors...
    42 KB (7,130 words) - 19:44, 13 April 2025
  • Thumbnail for Covariant formulation of classical electromagnetism
    The covariant formulation of classical electromagnetism refers to ways of writing the laws of classical electromagnetism (in particular, Maxwell's equations...
    25 KB (4,014 words) - 10:25, 17 May 2025
  • for the other result. The interior product relates the exterior derivative and Lie derivative of differential forms by the Cartan formula (also known...
    8 KB (1,583 words) - 20:31, 21 March 2025
  • Thumbnail for Covariant transformation
    rotation. The explicit form of a covariant transformation is best introduced with the transformation properties of the derivative of a function. Consider a scalar...
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  • Thumbnail for Electromagnetic tensor
    electromagnetic tensor, conventionally labelled F, is defined as the exterior derivative of the electromagnetic four-potential, A, a differential 1-form:...
    18 KB (3,463 words) - 17:22, 24 April 2025
  • Thumbnail for Tensor
    Application of tensor theory in engineering Continuum mechanics Covariant derivative Curvature Diffusion tensor MRI Einstein field equations Fluid mechanics...
    69 KB (9,357 words) - 21:16, 23 May 2025
  • derivative is a one-form on the punctured plane. It is closed (its exterior derivative is zero) but not exact, meaning that it is not the derivative of...
    5 KB (757 words) - 23:41, 13 February 2025
  • Thumbnail for Transpose
    tensor Operations Covariant derivative Exterior covariant derivative Exterior derivative Exterior product Hodge star operator Lie derivative Raising and lowering...
    20 KB (2,550 words) - 21:08, 14 April 2025
  • invariant of Riemannian metrics that measures the failure of the second covariant derivatives to commute. A Riemannian manifold has zero curvature if and only...
    19 KB (2,934 words) - 18:43, 20 December 2024
  • convention to compensate for the difficulty in describing contractions and covariant differentiation in modern abstract tensor notation, while preserving the...
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  • \nu }=0.} The (contracted) Bianchi identities automatically ensure the covariant conservation of the stress–energy tensor in curved spacetimes: ∇ μ T μ...
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  • Thumbnail for Stress–energy tensor
    ) In general relativity, the partial derivatives used in special relativity are replaced by covariant derivatives. What this means is that the continuity...
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  • _{a}T_{c}} Another important tensorial derivative is the Lie derivative. Unlike the covariant derivative, the Lie derivative is independent of the metric, although...
    42 KB (7,044 words) - 06:10, 20 January 2025
  • mathematics, the nonmetricity tensor in differential geometry is the covariant derivative of the metric tensor. It is therefore a tensor field of order three...
    4 KB (437 words) - 09:07, 24 July 2023
  • of covariant order 1 are the one-forms in V∗ (for this reason, the elements of the last two spaces are often called the contravariant and covariant vectors)...
    11 KB (1,719 words) - 12:38, 26 May 2025
  • metric, and many additional concepts follow: parallel transport, covariant derivatives, geodesics, etc. also do not require the concept of a metric. However...
    47 KB (8,323 words) - 13:14, 18 May 2025
  • }f(\mathbf {p} )} (see Covariant derivative), L v f ( p ) {\displaystyle L_{\mathbf {v} }f(\mathbf {p} )} (see Lie derivative), or v p ( f ) {\displaystyle...
    22 KB (4,812 words) - 00:04, 12 April 2025