permlib  0.2.9
Library for permutation computations
Public Member Functions | List of all members
permlib::partition::MatrixRefinement1< PERM, MATRIX > Class Template Reference

concrete $\mathcal P$-refinement for symmetric matrix automorphisms More...

#include <matrix_refinement1.h>

Inheritance diagram for permlib::partition::MatrixRefinement1< PERM, MATRIX >:
permlib::partition::Refinement< PERM >

Public Member Functions

 MatrixRefinement1 (unsigned long n, const MATRIX &matrix)
 constructor
 
virtual unsigned int apply (Partition &pi) const
 applies (left-)refinement to pi which is the original partition this refinement was initialized to More...
 
virtual bool init (Partition &pi)
 initializes refinement
 
- Public Member Functions inherited from permlib::partition::Refinement< PERM >
 Refinement (unsigned long n, RefinementType type)
 constructor
 
virtual ~Refinement ()
 destructor
 
bool initializeAndApply (Partition &pi)
 applies (left-)refinement to partition and initializes refinement for future use in R-base More...
 
virtual unsigned int apply2 (Partition &pi, const PERM &t) const
 applies (right-)refinement to pi which is the image of the original partition this refinement was initialized to under t More...
 
void undo (Partition &pi, unsigned int count) const
 reverts the last count elementary intersections of partition pi
 
RefinementType type () const
 the type of this refinement
 
unsigned int alternatives () const
 number of sibling of this refinement in the search tree
 
RefinementPtrIterator backtrackBegin () const
 iterator to begin of refinement siblings in the search tree
 
RefinementPtrIterator backtrackEnd () const
 iterator to end of refinement siblings in the search tree
 
virtual void sort (const BaseSorterByReference &, const Partition *)
 sorts siblings in the search tree
 

Additional Inherited Members

- Public Types inherited from permlib::partition::Refinement< PERM >
typedef boost::shared_ptr< Refinement< PERM > > RefinementPtr
 
typedef std::vector< RefinementPtr >::const_iterator RefinementPtrIterator
 
- Protected Member Functions inherited from permlib::partition::Refinement< PERM >
bool initialized () const
 true iff refinement is initalized
 
- Protected Attributes inherited from permlib::partition::Refinement< PERM >
unsigned long m_n
 length of partitions to work with
 
std::vector< RefinementPtr > m_backtrackRefinements
 refinement siblings in the search tree
 
std::list< int > m_cellPairs
 indices of elementary intersections to apply during refinement application
 

Detailed Description

template<class PERM, class MATRIX>
class permlib::partition::MatrixRefinement1< PERM, MATRIX >

concrete $\mathcal P$-refinement for symmetric matrix automorphisms

exploits that if $\alpha^g=\beta$ then the rows $\alpha,\beta$ must have the same diagonal elements for an automorphism $g$

Member Function Documentation

◆ apply()

template<class PERM , class MATRIX >
unsigned int permlib::partition::MatrixRefinement1< PERM, MATRIX >::apply ( Partition pi) const
virtual

applies (left-)refinement to pi which is the original partition this refinement was initialized to

See also
undo
apply2
Returns
number of elementary intersections that were needed for refinement application

Implements permlib::partition::Refinement< PERM >.


The documentation for this class was generated from the following file: