GIndexQ

• GIndexQ[expr] gives True if expr is recognized as a valid generalized-index (an index of type abstract, basis, component, directional or label). Otherwise it gives False. In particular it gives False on all patterns.
• GIndexQ[expr, vbundle] gives True if expr is a valid generalized-index belonging to vbundle or to a subvbundle of vbundle.

• GIndexQ is a driver which detects which type of index we have and calls one of the functions AIndexQ, BIndexQ, CIndexQ, DIndexQ or LIndexQ.
• See: Section 2.1.
• New in version 0.
• Last update: 24-IX-2007 for version 0.9.3 of xTensor`.

Created by Mathematica  (May 16, 2008)