• 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) - 10:47, 2 July 2025
  • 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 (3,310 words) - 08:13, 5 June 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 (6,455 words) - 10:20, 22 June 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 (8,670 words) - 14:30, 7 July 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) - 11:43, 2 June 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
  • 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) - 14:15, 26 June 2025
  • 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 (12,242 words) - 02:39, 1 July 2025
  • tensor fields: Lie derivatives, derivatives with respect to connections, the exterior derivative of totally antisymmetric covariant tensors, i.e. differential...
    38 KB (7,051 words) - 18:44, 14 May 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 (3,601 words) - 03:37, 1 August 2025
  • Thumbnail for Covariant transformation
    In physics, a covariant transformation is a rule that specifies how certain entities, such as vectors or tensors, change under a change of basis. 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 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)...
    27 KB (4,375 words) - 18:41, 24 July 2025
  • 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...
    9 KB (678 words) - 19:00, 30 January 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 (1,581 words) - 20:31, 21 March 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...
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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 (7,132 words) - 03:26, 17 July 2025
  • 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) - 00:28, 25 June 2025
  • Thumbnail for Transpose
    tensor Operations Covariant derivative Exterior covariant derivative Exterior derivative Exterior product Hodge star operator Lie derivative Raising and lowering...
    19 KB (2,422 words) - 08:49, 10 July 2025
  • Thumbnail for Tensor
    Application of tensor theory in engineering Continuum mechanics Covariant derivative Curvature Diffusion tensor MRI Einstein field equations Fluid mechanics...
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  • 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
  • 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)...
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  • neither strictly covariant nor strictly contravariant; at least one of the indices of a mixed tensor will be a subscript (covariant) and at least one...
    4 KB (645 words) - 03:23, 31 March 2023
  • convention to compensate for the difficulty in describing contractions and covariant differentiation in modern abstract tensor notation, while preserving the...
    7 KB (1,233 words) - 18:59, 30 January 2025
  • is normal to note that explicitly. Kronecker delta Levi-Civita symbol Covariant tensor Contravariant tensor The classical interpretation is by components...
    8 KB (1,034 words) - 11:00, 27 October 2024
  • metric, and many additional concepts follow: parallel transport, covariant derivatives, geodesics, etc. also do not require the concept of a metric. However...
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  • in multivariate calculus, and their manipulation is carried out using exterior algebra. Following Grassmann, developments in multilinear algebra were...
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  • manifold Information geometry Fisher information metric covariant derivative exterior covariant derivative Levi-Civita connection parallel transport Development...
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  • with covariant and contravariant vectors, where the position of an index indicates the type of vector, the first case usually applies; a covariant vector...
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  • {\displaystyle \mathbf {b} } are vector-valued differentiable functions, then the derivative (denoted by a prime ′ {\displaystyle {}'} ) of a ⋅ b {\displaystyle \mathbf...
    28 KB (4,426 words) - 07:56, 22 June 2025