Bracket

• Bracket[a][vect1, vect2] represents the Lie bracket of the two contravariant vector fields vect1 and vect2.

• The free indices of vect1 and vect2 are assumed to be the (same) ultraindex of their vbundle.
• The free index of the resulting contravariant vector field is a.
• See: Section 4.8.
• See also: BracketToCovD.
• New in version 0.
• Last update: 25-X-2007 for version 0.9.3 of xTensor`.

Created by Mathematica  (May 16, 2008)