Reference documentation for deal.II version Git 0491297983 20190923 09:31:59 +0200

#include <deal.II/base/symmetric_tensor.h>
Typedef template magic denoting the result of a double contraction between two tensors or ranks rank1 and rank2. In general, this is a tensor of rank rank1+rank24
, but if this is zero it is a single scalar Number. For this case, we have a specialization.
Definition at line 186 of file symmetric_tensor.h.