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rename "Mults" class to "Rel"; rename variables where appropriate. now all instances of "mult" refer to a multiplicity, not a relation.

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David Allemang
2019-12-30 18:31:50 -05:00
parent 18d6e24518
commit 0c94d48235
3 changed files with 63 additions and 52 deletions
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43
src/groups.cpp
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@@ -1,48 +1,47 @@
#include "groups.h"
//#include <utility>
#include <iterator>
#include <sstream>
namespace tc {
Group::Group(int ngens, const std::vector<Mult> &rels, std::string name) : ngens(ngens), name(std::move(name)) {
Group::Group(int ngens, const std::vector<Rel> &rels, std::string name) : ngens(ngens), name(std::move(name)) {
_mults.resize(ngens);
for (int i = 0; i < ngens; i++) {
_mults[i].resize(ngens, 2);
}
for (Mult m : rels) {
if (m.gens[0] < m.gens[1])
_mults[m.gens[0]][m.gens[1]] = m.mult;
for (Rel rel : rels) {
if (rel.gens[0] < rel.gens[1])
_mults[rel.gens[0]][rel.gens[1]] = rel.mult;
else
_mults[m.gens[1]][m.gens[0]] = m.mult;
_mults[rel.gens[1]][rel.gens[0]] = rel.mult;
}
}
void Group::setmult(Mult m) {
if (m.gens[0] < m.gens[1])
_mults[m.gens[0]][m.gens[1]] = m.mult;
void Group::setmult(Rel rel) {
if (rel.gens[0] < rel.gens[1])
_mults[rel.gens[0]][rel.gens[1]] = rel.mult;
else
_mults[m.gens[1]][m.gens[0]] = m.mult;
_mults[rel.gens[1]][rel.gens[0]] = rel.mult;
}
std::vector<Mult> Group::get_mults() const {
std::vector<Mult> mults;
std::vector<Rel> Group::get_rels() const {
std::vector<Rel> rels;
for (int i = 0; i < ngens - 1; i++) {
for (int j = i + 1; j < ngens; j++) {
mults.push_back({i, j, _mults[i][j]});
rels.push_back({i, j, _mults[i][j]});
}
}
return mults;
return rels;
}
Group Group::product(const Group &other) const {
int off = ngens;
Group g(ngens + other.ngens, get_mults());
Group g(ngens + other.ngens, get_rels());
for (Mult m : other.get_mults()) {
g.setmult({off + m.gens[0], off + m.gens[1], m.mult});
for (Rel rel : other.get_rels()) {
g.setmult({off + rel.gens[0], off + rel.gens[1], rel.mult});
}
std::stringstream ss;
@@ -55,9 +54,9 @@ namespace tc {
Group Group::power(int p) const {
Group g(ngens * p);
for (Mult m : get_mults()) {
for (Rel rel : get_rels()) {
for (int off = 0; off < g.ngens; off += ngens) {
g.setmult({off + m.gens[0], off + m.gens[1], m.mult});
g.setmult({off + rel.gens[0], off + rel.gens[1], rel.mult});
}
}
@@ -76,12 +75,12 @@ namespace tc {
return g.power(p);
}
Group schlafli(const std::vector<int> &mults, const std::string name) {
int ngens = mults.size() + 1;
Group schlafli(const std::vector<int> &mults, const std::string& name) {
int ngens = (int) mults.size() + 1;
Group g(ngens, {}, name);
for (int i = 0; i < mults.size(); i++) {
for (int i = 0; i < (int) mults.size(); i++) {
g.setmult({i, i + 1, mults[i]});
}