28char time_slice_access_C[] =
"$Header: /cvsroot/Lorene/C++/Source/Time_slice/time_slice_access.C,v 1.9 2014/10/13 08:53:47 j_novak Exp $" ;
76#include "time_slice.h"
Time evolution with partial storage (*** under development ***).
virtual void update(const TyT &new_value, int j, double time_j)
Sets a new value at a given time step.
TyT time_derive(int j, int n=2) const
Computes the time derivative at time step j by means of a n-th order scheme, from the values at steps...
bool is_known(int j) const
Checks whether the value a given time step has been set.
Metric for tensor calculation.
virtual const Sym_tensor & cov() const
Read-only access to the covariant representation.
Tensor field of valence 0 (or component of a tensorial field).
Class intended to describe valence-2 symmetric tensors.
virtual const Sym_tensor & k_dd() const
Extrinsic curvature tensor (covariant components ) at the current time step (jtime )
int jtime
Time step index of the latest slice.
Evolution_std< Scalar > trk_evol
Values at successive time steps of the trace K of the extrinsic curvature.
Metric * p_gamma
Pointer on the induced metric at the current time step (jtime)
Evolution_std< Sym_tensor > k_dd_evol
Values at successive time steps of the covariant components of the extrinsic curvature tensor .
virtual const Scalar & trk() const
Trace K of the extrinsic curvature at the current time step (jtime )
virtual const Scalar & nn() const
Lapse function N at the current time step (jtime )
virtual const Sym_tensor & gam_dd() const
Induced metric (covariant components ) at the current time step (jtime )
Evolution_std< Sym_tensor > gam_dd_evol
Values at successive time steps of the covariant components of the induced metric .
Evolution_std< Sym_tensor > gam_uu_evol
Values at successive time steps of the contravariant components of the induced metric .
int scheme_order
Order of the finite-differences scheme for the computation of time derivatives.
virtual const Vector & beta() const
shift vector at the current time step (jtime )
const Metric & gam() const
Induced metric at the current time step (jtime )
virtual const Sym_tensor & k_uu() const
Extrinsic curvature tensor (contravariant components ) at the current time step (jtime )
Evolution_std< Scalar > n_evol
Values at successive time steps of the lapse function N.
virtual const Sym_tensor & gam_uu() const
Induced metric (contravariant components ) at the current time step (jtime )
Evolution_std< double > the_time
Time label of each slice.
Evolution_std< Sym_tensor > k_uu_evol
Values at successive time steps of the contravariant components of the extrinsic curvature tensor .
Evolution_std< Vector > beta_evol
Values at successive time steps of the shift vector .
Tensor field of valence 1.