permlib 0.2.9
Library for permutation computations
Loading...
Searching...
No Matches
bsgs_core.h
1// ---------------------------------------------------------------------------
2//
3// This file is part of PermLib.
4//
5// Copyright (c) 2009-2011 Thomas Rehn <thomas@carmen76.de>
6// All rights reserved.
7//
8// Redistribution and use in source and binary forms, with or without
9// modification, are permitted provided that the following conditions
10// are met:
11// 1. Redistributions of source code must retain the above copyright
12// notice, this list of conditions and the following disclaimer.
13// 2. Redistributions in binary form must reproduce the above copyright
14// notice, this list of conditions and the following disclaimer in the
15// documentation and/or other materials provided with the distribution.
16// 3. The name of the author may not be used to endorse or promote products
17// derived from this software without specific prior written permission.
18//
19// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29//
30// ---------------------------------------------------------------------------
31
32#include <list>
33#include <vector>
34
35#ifndef BSGSCORE_H_
36#define BSGSCORE_H_
37
38namespace permlib {
39
41template <class PERM, class TRANS>
42struct BSGSCore {
43 public:
45 typedef PERM PERMtype;
48
49 typedef std::list<typename PERM::ptr> PERMlist;
50
52 virtual ~BSGSCore() {}
53
55 std::vector<dom_int> B;
57 PERMlist S;
59 std::vector<TRANS> U;
61 dom_int n;
62
64
67 virtual bool operator==(const BSGSCore<PERM,TRANS>& bsgs) const;
68
70 virtual bool isSymmetricGroup() const { return false; }
71 protected:
73 explicit BSGSCore(unsigned int id) : m_id(id) {}
75 BSGSCore(unsigned int id, dom_int n_, dom_int bSize) : B(bSize), n(n_), m_id(id) {}
77 BSGSCore(unsigned int id, const std::vector<dom_int>& B_, const std::vector<TRANS>& U_, dom_int n_)
78 : B(B_), U(U_.size(), TRANS(n_)), n(n_), m_id(id) {}
79
81 int m_id;
82 private:
84 BSGSCore(const BSGSCore<PERM,TRANS>& copy) {}
86 BSGSCore& operator=(const BSGSCore<PERM,TRANS>& copy) {}
87};
88
89template <class PERM, class TRANS>
91 return bsgs.m_id == this->m_id;
92}
93
94}
95
96#endif // BSGSCORE_H_
97
core data of a base and strong generating set (BSGS)
Definition bsgs_core.h:42
BSGSCore(unsigned int id, const std::vector< dom_int > &B_, const std::vector< TRANS > &U_, dom_int n_)
kind of copy constructor, initializes data structure with given data
Definition bsgs_core.h:77
dom_int n
Definition bsgs_core.h:61
std::vector< TRANS > U
Definition bsgs_core.h:59
PERM PERMtype
Definition bsgs_core.h:45
TRANS TRANStype
Definition bsgs_core.h:47
BSGSCore(unsigned int id, dom_int n_, dom_int bSize)
constructs empty data structure with given group id, group degree n and base size n
Definition bsgs_core.h:75
std::vector< dom_int > B
Definition bsgs_core.h:55
virtual ~BSGSCore()
empty destructor
Definition bsgs_core.h:52
PERMlist S
Definition bsgs_core.h:57
virtual bool operator==(const BSGSCore< PERM, TRANS > &bsgs) const
checks for equality by internal id only
Definition bsgs_core.h:90
virtual bool isSymmetricGroup() const
true if this structure represents a symmetric group
Definition bsgs_core.h:70
BSGSCore(unsigned int id)
constructs empty data structure with given group id
Definition bsgs_core.h:73
int m_id
Definition bsgs_core.h:81