MetricQ

• MetricQ[symbol] yields True if symbol has been defined as a metric and False otherwise.

• Each metric has an upvalue for this function.
• Every metric is also a tensor.
• See: Section 4.4, Section 1.3.
• See also: xTensorQ, DefMetric.
• New in version 0.
• Last update: 23-IX-2007 for version 0.9.3 of xTensor`.

Created by Mathematica  (May 16, 2008)