$epsilonSign

• $epsilonSign gives the sign of the epsilon tensor of a metric when all covariant components have been sorted. It is used in the relation between the epsilon tensor and the etaUp, etaDown tensorial densities.

• The etaUp and etaDown tensorial densities are defined in the companion package xCoba`, as well as their relations with the epsilon tensor.
• See: Section 4.6.
• See also: epsilon
• New in version 0.
• Last update: 14-V-2008 for version 0.9.5 of xTensor`.

Created by Mathematica  (May 16, 2008)