$TorsionSign

• $TorsionSign defines the global sign of the Torsion tensor of a covariant derivative: cd[-a][ cd[-b][ f[] ] ] - cd[-b][ cd[-a][ f[] ] ] = - $TorsionSign Torsioncd[c,-a,-b] cd[-c][ f[] ].

• The default value is +1, following Wald's conventions, as usual.
• See: Section 4.5.
• See also: DefCovD, Torsion.
• New in version 0.
• Last update: 14-V-2008 for version 0.9.5 of xTensor`.

Created by Mathematica  (May 16, 2008)