permlib
0.2.9
Library for permutation computations
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abstract base class for subgroup (and coset) predicates More...
#include <subgroup_predicate.h>
Public Member Functions | |
virtual | ~SubgroupPredicate () |
virtual destructor | |
virtual bool | operator() (const PERM &) const =0 |
true iff group element fulfills predicate | |
virtual bool | childRestriction (const PERM &h, unsigned int i, unsigned long beta_i) const =0 |
checks if a given group element should not be followed in backtrack search More... | |
virtual unsigned int | limit () const =0 |
limit of recursion depth in backtrack search More... | |
abstract base class for subgroup (and coset) predicates
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pure 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
h | (partial) group element, arising in the backtrack search |
i | backtrack recursion level |
beta_i | base element corresponding to current backtrack recursion level |
Implemented in permlib::LexSmallerImagePredicate< PERM >, permlib::SetImagePredicate< PERM >, permlib::GroupIntersectionPredicate< PERM, TRANS >, permlib::SetwiseStabilizerPredicate< PERM >, permlib::VectorStabilizerPredicate< PERM >, and permlib::MatrixAutomorphismPredicate< PERM, MATRIX >.
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pure virtual |
limit of recursion depth in backtrack search
only images of the #{limit()} first base points have to be considered
Implemented in permlib::LexSmallerImagePredicate< PERM >, permlib::SetImagePredicate< PERM >, permlib::GroupIntersectionPredicate< PERM, TRANS >, permlib::SetwiseStabilizerPredicate< PERM >, permlib::VectorStabilizerPredicate< PERM >, and permlib::MatrixAutomorphismPredicate< PERM, MATRIX >.