92 omdsdp.
set(1) = - om * yya ;
93 omdsdp.set(2) = om * xxa ;
97 omdsdp.set(1) = om * yya ;
98 omdsdp.set(2) = - om * xxa ;
102 omdsdp.set(1).set_spectral_va()
104 omdsdp.set(2).set_spectral_va()
106 omdsdp.set(3).set_spectral_va()
109 omdsdp.annule_domain(nz-1) ;
125 for (
int i=1; i<=3; i++)
126 for (
int j=1; j<=i; j++) {
128 double(2) /double(3) * div_beta * (
gtilde.
con())(i,j) ;
Coord xa
Absolute x coordinate.
Base_val ** std_base_vect_cart() const
Returns the standard spectral bases for the Cartesian components of a vector.
virtual const Sym_tensor & con() const
Read-only access to the contravariant representation.
Map & mp
Mapping associated with the star.
Sym_tensor hij_auto
Deviation of the inverse conformal metric from the inverse flat metric generated principally by the ...
const Mg3d * get_mg() const
Gives the Mg3d on which the mapping is defined.
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 .
Scalar kcar_auto
Part of the scalar generated by beta_auto, i.e.
double get_rot_phi() const
Returns the angle between the x –axis and X –axis.
void set(const Map *mp, Mtbl *(*construct)(const Map *))
Semi-constructor from a mapping and a method.
Tensor field of valence 1.
void annule_hard()
Sets the Scalar to zero in a hard way.
int get_nzone() const
Returns the number of domains.
void extrinsic_curvature(double omega)
Computes tkij_auto and akcar_auto from beta_auto, nn and Q.
virtual void del_deriv() const
Deletes all the derived quantities.
const Scalar & divergence(const Metric &) const
The divergence of this with respect to a Metric .
Tenseur contract(const Tenseur &, int id1, int id2)
Self contraction of two indices of a Tenseur .
Metric gtilde
Conformal metric .
Coord ya
Absolute y coordinate.
const Tensor & derive_con(const Metric &gam) const
Returns the "contravariant" derivative of this with respect to some metric , by raising the last inde...
const Base_vect_cart & get_bvect_cart() const
Returns the Cartesian basis associated with the coordinates (x,y,z) of the mapping, i.e.
Scalar & set(const Itbl &ind)
Returns the value of a component (read/write version).
Scalar nn
Lapse function N .
Sym_tensor tkij_auto
Part of the extrinsic curvature tensor generated by beta_auto.
Vector beta_auto
Part of the shift vector generated principally by the star (Spherical components with respect to the ...
Sym_tensor derive_lie(const Vector &v) const
Computes the Lie derivative of this with respect to some vector field v.
Class intended to describe valence-2 symmetric tensors.