PatternIndex

• PatternIndex[a, type] returns a pattern with name a for indices of the given type.
• PatternIndex[a, type, character] returns a pattern with name a for indices of the given type and character.
• PatternIndex[a, type, character, vbundle] returns a pattern with name a for indices of the given type and character, on the given vbundle.

• type can currently be AIndex, DIndex or LIndex.
• character can be Up or Down, or Null to denote both characters.
• See: Section 2.6.
• See also: PIndexQ.
• New in version 0.
• Last update: 28-X-2007 for version 0.9.3 of xTensor`.

Created by Mathematica  (May 16, 2008)