Maxima Function
lriemann (dis)
Covariant Riemann-tensor (lriem[]
).
Computes the covariant Riemann-tensor as the array lriem
. If the
argument dis is true
, unique nonzero values are displayed.
If the variable cframe_flag
is true
, the covariant Riemann
tensor is computed directly from the frame field coefficients. Otherwise,
the (3,1) Riemann tensor is computed first.
For information on index ordering, see riemann
.