69 for (
int i=1; i<=3; i++)
70 for (
int j=1; j<=i; j++) {
73 double(2) /double(3) * div_beta * (
flat.
con())(i,j) ;
Scalar chi
Total function .
Tensor field of valence 0 (or component of a tensorial field).
Tensor up_down(const Metric &gam) const
Computes a new tensor by raising or lowering all the indices of *this .
Sym_tensor haij_auto
Part of the extrinsic curvature tensor generated by beta_auto.
virtual const Sym_tensor & con() const
Read-only access to the contravariant representation.
const Scalar & divergence(const Metric &) const
The divergence of this with respect to a Metric .
void extrinsic_curvature()
Computes haij_auto and hacar_auto from beta_auto, nn and Psi .
Cmp pow(const Cmp &, int)
Power .
Tenseur contract(const Tenseur &, int id1, int id2)
Self contraction of two indices of a Tenseur .
Metric_flat flat
Flat metric defined on the mapping (Spherical components with respect to the mapping of the star) ...
Scalar Psi
Total conformal factor .
const Tensor & derive_con(const Metric &gam) const
Returns the "contravariant" derivative of this with respect to some metric , by raising the last inde...
Scalar hacar_auto
Part of the scalar generated by beta_auto, i.e.
Scalar & set(const Itbl &ind)
Returns the value of a component (read/write version).
Vector beta_auto
Part of the shift vector generated principally by the star (Spherical components with respect to the ...
virtual void del_deriv() const
Deletes all the derived quantities.
virtual void std_spectral_base()
Sets the standard spectal bases of decomposition for each component.
Class intended to describe valence-2 symmetric tensors.