TraceProductDummy

• TraceProductDummy[expr, index] expands the dummy index of a sum-vbundle in expr to dummy indices of its subvbundles.
• TraceProductDummy[expr, {i1, i2, ...}] expands the dummies i1, i2, ...
• TraceProductDummy[expr, {VBundle[VB1], i2, ...}] expands the indices i2, ... and all dummies of the sum-vbundle VB1.

• This function has infix notation CircleDot.
• See: Section 4.3.
• See also: DefVBundle.
• New in version 0.
• Last update: 28-X-2007 for version 0.9.3 of xTensor`.

Created by Mathematica  (May 16, 2008)