Symmetry[4,
,{●1→G,●2→F,●3→D,●4→K},StrongGenSet[{1,2,3},GenSet[Cycles[{1,3},{2,4}],-Cycles[{1,2}],-Cycles[{3,4}]]]]• See: Section 7.1.
• See also: ToCanonical.
• New in version 0.
• Last update: 26-X-2007 for version 0.9.3 of xTensor`.
SymmetryOf
• Symmetry[expr] returns the symmetry group of permutations of indices of expr.
• The symmetry is returned as an expression with head Symmetry. An example of a symmetry expression for a tensor Rie with the symmetries of a Riemann tensor is
Symmetry[4,,{●1→G,●2→F,●3→D,●4→K},StrongGenSet[{1,2,3},GenSet[Cycles[{1,3},{2,4}],-Cycles[{1,2}],-Cycles[{3,4}]]]]
• See: Section 7.1.
• See also: ToCanonical.
• New in version 0.
• Last update: 26-X-2007 for version 0.9.3 of xTensor`.
| Created by Mathematica (May 16, 2008) |  |