covariant derivative


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covariant derivative

[kō′ver·ē·ənt də′riv·əd·iv]
(mathematics)
For a tensor field at a point P of an affine space, a new tensor field equal to the difference between the derivative of the original field defined in the ordinary manner and the derivative of a field whose value at points close to P are parallel to the value of the original field at P as specified by the affine connection.
References in periodicals archive ?
Manoff [5] applied the method of lagrangian with covariant derivative to special type of lagrangian density depending on scalar and vector fields.
n] (n [greater than or equal to] 3) without boundary the associated scalars and the stucture tensor are such that [alpha] + b + 2c [less than or equal to] 0 and dD(X, X) [less than or equal to] 0 for all X, then a projective Killing vector field has vanishing covariant derivative and if [alpha] + b + 2c < 0 and dD(X, X) < 0, then there does not exist any non-zero projective Killing vector field in this manifold.
The covariant derivative of an integrable Z-connection is fully determined by its value on [M.
mu]] denotes covariant derivative with respect to coordinates (in this case the coordinates [x.
His topics include the basics of geometry and relativity, affine connection and covariant derivative, the geodesic equation and its applications, curvature tensor and Einstein's equation, black holes, and cosmological models and the big bang theory.
In view of the above relations, the covariant derivative of (2.
19) Because the covariant derivative of the metric is zero ([[nabla.
m[xi]] is the bimetric covariant derivative with respect to [xi] and is given by [[nabla].
Let D denote the covariant derivative with respect to G and [Mathematical Expression Omitted] the length of a tensor with respect to G, while [D.
where D is the covariant derivative on (N, h) and [nabla] is the covariant derivative on (M,g).
In the parentheses we recognize the prototype of the covariant derivative.
0]) be a smooth compact d-dimensional Riemannian manifold with the Levi-Civita covariant derivative [nabla], a Riemannian metric g, a fixed base point 0 [member of] M and a fixed orthogonal frame [u.