Maxima Function
uricci (dis)
This function first computes the
covariant components ric[i,j]
of the Ricci tensor.
Then the mixed Ricci tensor is computed using the
contravariant metric tensor. If the value of the argument dis
is true
, then these mixed components, uric[i,j]
(the
index i
is covariant and the index j
is contravariant), will be displayed
directly. Otherwise, ricci(false)
will simply compute the entries
of the array uric[i,j]
without displaying the results.