Provides the covariant Riemann curvature tensor \(R_{ijkl}\).
Arguments
- g
A covariant metric tensor, a "metric_field" object. See
metric_field()to create a new metric tensor, or use predefined metrics, e.g.g_eucl_cart().
Value
Returns the covariant Riemann curvature tensor \(R_{ijkl}\)
as rank 4 array().
See also
Wikipedia: Riemann curvature tensor
Other geometric tensors:
christoffel(),
ricci(),
ricci_sc()
Examples
riemann(g_eucl_sph(3))
#> <Labeled Array> [3x3x3x3] .(-j, -l, -k, -i2)