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

predicate for the automorphisms of a symmetric matrix More...

#include <matrix_automorphism_predicate.h>

Inheritance diagram for permlib::MatrixAutomorphismPredicate< PERM, MATRIX >:
permlib::SubgroupPredicate< PERM >

Public Member Functions

 MatrixAutomorphismPredicate (const MATRIX &matrix)
 constructor
 
virtual bool operator() (const PERM &p) const
 true iff group element fulfills predicate
 
virtual bool childRestriction (const PERM &h, unsigned int i, unsigned long beta_i) const
 checks if a given group element should not be followed in backtrack search More...
 
virtual unsigned int limit () const
 limit of recursion depth in backtrack search More...
 
- Public Member Functions inherited from permlib::SubgroupPredicate< PERM >
virtual ~SubgroupPredicate ()
 virtual destructor
 

Detailed Description

template<class PERM, class MATRIX>
class permlib::MatrixAutomorphismPredicate< PERM, MATRIX >

predicate for the automorphisms of a symmetric matrix

Member Function Documentation

◆ childRestriction()

template<class PERM , class MATRIX >
bool permlib::MatrixAutomorphismPredicate< PERM, MATRIX >::childRestriction ( const PERM &  h,
unsigned int  i,
unsigned long  beta_i 
) const
virtual

checks if a given group element should not be followed in backtrack search

If returns false then element h that arises at backtrack level i with corresponding base element beta_i will not extend to a "complete" group element that fulfills the predicate

Parameters
h(partial) group element, arising in the backtrack search
ibacktrack recursion level
beta_ibase element corresponding to current backtrack recursion level

Implements permlib::SubgroupPredicate< PERM >.

◆ limit()

template<class PERM , class MATRIX >
unsigned int permlib::MatrixAutomorphismPredicate< PERM, MATRIX >::limit ( ) const
virtual

limit of recursion depth in backtrack search

only images of the #{limit()} first base points have to be considered

Implements permlib::SubgroupPredicate< PERM >.


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