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.
- Weierstraß's Gap Theorem
- Weierstraß Sigma Function
- Weierstraß's Polynomial Theorem
- Weierstraß's Theorem
- Weierstraß Zeta Function
- Weighings
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- Weingarten Map
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- Welch Apodization Function
- Well-Defined
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- Werner Formulas
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- Weyl Tensor
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- W-Function
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