Let , , and be three polar vectors, and define
(1)
| |||
(2)
|
where det is the determinant. The is a third-tensor rank tensor, then the dual scalar is defined as
(3)
|
where is the permutation tensor.
Let , , and be three polar vectors, and define
(1)
| |||
(2)
|
where det is the determinant. The is a third-tensor rank tensor, then the dual scalar is defined as
(3)
|
where is the permutation tensor.
Weisstein, Eric W. "Dual Scalar." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/DualScalar.html