Double Contraction Relation
A Tensor 
is said to satisfy the double contraction relation when
This equation is satisfied by
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where the hat denotes zero trace, symmetric unit Tensors. These Tensors are used todefine the Spherical Harmonic Tensor.See also Spherical Harmonic Tensor, Tensor
References
Arfken, G. ``Alternating Series.'' Mathematical Methods for Physicists, 3rd ed. Orlando, FL: Academic Press, p. 140, 1985.
- Gauss-Manin Connection
- Gauss Map
- Gauss Measure
- Gauss Multiplication Formula
- Gauss Plane
- Gauss-Salamin Formula
- Gauss's Backward Formula
- Gauss's Circle Problem
- Gauss's Class Number Conjecture
- Gauss's Class Number Problem
- Gauss's Constant
- Gauss's Criterion
- Gauss's Double Point Theorem
- Gauss's Equation (Radius Derivatives)
- Gauss's Formula
- Gauss's Formulas
- Gauss's Forward Formula
- Gauss's Harmonic Function Theorem
- Gauss's Hypergeometric Theorem
- Gauss's Inequality
- Gauss's Interpolation Formula
- Gauss's Lemma
- Gauss's Machin-Like Formula
- Gauss's Mean-Value Theorem
- Gauss's Polynomial Theorem