69 #include "connection.h" 112 cout <<
"Connection_flat::operator= : not implemented yet !" << endl ;
const Map *const mp
Reference mapping.
bool assoc_metric
Indicates whether the connection is associated with a metric (in which case the Ricci tensor is symme...
Base class for coordinate mappings.
Tensor_sym delta
Tensor which defines the connection with respect to the flat one: is the difference between the con...
Vectorial bases (triads) with respect to which the tensorial components are defined.
virtual ~Connection_flat()
destructor
void operator=(const Connection_flat &)
Assignment to another Connection_flat.
Connection_flat(const Map &, const Base_vect &)
Contructor from a triad, has to be defined in the derived classes.
virtual void set_etat_zero()
Sets the logical state of all components to ETATZERO (zero state).
Tensor * p_ricci
Pointer of the Ricci tensor associated with the connection.
const Base_vect *const triad
Triad with respect to which the connection coefficients are defined.
Class intended to describe valence-2 symmetric tensors.
virtual const Tensor & ricci() const
Computes (if not up to date) and returns the Ricci tensor associated with the current connection...