DependenciesOfTensor

• DependenciesOfTensor[tensor] gives the list of parameters and manifolds upon which tensor depends.

• Each tensor has an upvalue for this function.
• The function is constructed from the second argument to DefTensor. The order in this second argument is irrelevant because it is overwritten by xTensor`Private`SortDependencies.
• A tensor is always a tensor field on the manifolds corresponding to its indices; that is, we consider that a nonscalar tensor cannot be a constant on a given manifold. This is because we need additional structure to show that a tensor field does not depend on that manifold (for example a vector field, in order to take Lie derivatives).
• See: Section 4.4.
• See also: DependenciesOf.
• New in version 0.
• Last update: 23-IX-2007 for version 0.9.3 of xTensor`.

Created by Mathematica  (May 16, 2008)