DefProductMetric

• DefProductMetric[metric[-a, -b], { {vbundle1, scalar1[]}, ...}, covd, covdsymbol] defines the metric scalar1[]^2 metric1[., .] + scalar2[]^2 metric2[., .] + ... and its associated curvature tensors.

• The signdet of the metric is computed from those of the sub-metrics.
• The defined covd is always torsionless.
• See: Section 4.6, Section 1.3.
• See also: Metric, DefMetric, ExpandProductMetric.
• New in version 0.
• Last update: 25-X-2007 for version 0.9.3 of xTensor`.

Created by Mathematica  (May 16, 2008)