basis.h File Reference

Implementation of tensor leg bases, split into symmetry-protected blocks. More...

#include "inc/util/scalars.h"
#include "inc/util/boost_versioning.h"
#include "inc/rep/rep.h"

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Classes
class	syten::Basis
	Basis on a specific tensor leg, essentially a list of symmetry sectors and associated reduced tensor sizes More...

Namespaces
namespace	syten
	Syten namespace.

Enumerations
enum class	syten::Direction : char { syten::Inc , syten::Out , syten::Invalid , syten::Silent }
	Direction of the leg from the view of the tensor it belongs to. More...

Functions
Basis	syten::combineBasisExpansion (Basis const &a, Basis const &b)
	Given two bases a and b, returns a combined basis a + b considering symmetries: Sectors s occuring in both bases have size a[s]+b[s], sectors only occuring in one basis keep their size. More...
SRDef	syten::dist (Basis const &b1, Sector const &s2)
	Returns the distance between a sector and a basis. More...
Basis	syten::filterBasis (Basis const &input, Basis const &site, Basis const &target, Index const remainingSites)
	Returns a new basis which contains only elements from the input basis that are still compatible with the target basis, currently only works with Group::U1 and Group::SU2 symmetries. More...
Basis	syten::gen_vac (Basis in)
	Fuses in with in.adjoint() and removes every sector of the resulting basis which is not the vacuum. More...
Basis	syten::intersection (Basis const &b1, Basis const &b2)
	Returns the intersection of the two bases, i.e. the size of a sector in the returned basis is the minimum of the sizes in the two input bases. More...
SRDef	syten::min_dist (Basis const &b1, Basis const &b2)
	Returns the minimal distance between elements of the two basis. More...
Direction	syten::operator! (Direction const &dir)
	Negate the direction of a basis, only valid for Direction::Inc and Direction::Out. More...
std::ostream &	syten::operator<< (std::ostream &out, Basis const &b)
	Output of a basis, more concise if basis is silenced. More...
std::ostream &	syten::operator<< (std::ostream &out, Direction const dir)
	Output of the direction of a basis. More...
Basis	syten::sum (Basis const &b1, Basis const &b2)
	Returns the sum/union of two bases, i.e. the size of a sector in the returned basis is the maximum of the sizes in the two input bases. More...

Detailed Description

Implementation of tensor leg bases, split into symmetry-protected blocks.