florian/enumerate-balanced-ideals
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color principal ideals

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This commit is contained in:
Florian Stecker 2025-03-08 11:56:27 -05:00
parent 49f64f509b
commit 0f23a4b477
1 changed files with 76 additions and 49 deletions
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81
graph.c
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@ -1,16 +1,15 @@
#include "weyl.h"
#include "queue.h"
#include "weyl.h"
#include <strings.h>
#include <stdio.h>
#include <memory.h>
#include <stdio.h>
#include <strings.h>
static char* alphabetize(weylgroup_element_t *e, char *str)
{
if(e->wordlength == 0)
static char *alphabetize(weylgroup_element_t *e, char *str) {
if (e->wordlength == 0)
sprintf(str, "1");
else {
for(int j = 0; j < e->wordlength; j++)
for (int j = 0; j < e->wordlength; j++)
str[j] = e->word[j] + 'a';
str[e->wordlength] = 0;
}
@ -18,8 +17,7 @@ static char* alphabetize(weylgroup_element_t *e, char *str)
return str;
}
int main(int argc, const char *argv[])
{
int main(int argc, const char *argv[]) {
semisimple_type_t type;
unsigned long right_invariance, left_invariance;
doublequotient_t *dq;
@ -30,43 +28,72 @@ int main(int argc, const char *argv[])
ERROR(argc < 2, "Too few arguments!\n");
type.n = 0;
for(int i = 0; i < argc - 1; i++) {
if(argv[i+1][0] < 'A' || argv[i+1][0] > 'G')
for (int i = 0; i < argc - 1; i++) {
if (argv[i + 1][0] < 'A' || argv[i + 1][0] > 'G')
break;
type.n++;
}
type.factors = (simple_type_t*)malloc(type.n*sizeof(simple_type_t));
for(int i = 0; i < type.n; i++) {
type.factors[i].series = argv[i+1][0];
type.factors[i].rank = argv[i+1][1] - '0';
ERROR(argv[i+1][0] < 'A' || argv[i+1][0] > 'G' || argv[i+1][1] < '1' || argv[i+1][1] > '9', "Arguments must be Xn with X out of A-G and n out of 1-9\n");
type.factors = (simple_type_t *)malloc(type.n * sizeof(simple_type_t));
for (int i = 0; i < type.n; i++) {
type.factors[i].series = argv[i + 1][0];
type.factors[i].rank = argv[i + 1][1] - '0';
ERROR(argv[i + 1][0] < 'A' || argv[i + 1][0] > 'G' ||
argv[i + 1][1] < '1' || argv[i + 1][1] > '9',
"Arguments must be Xn with X out of A-G and n out of 1-9\n");
}
left_invariance = right_invariance = 0;
if(argc - type.n >= 3) {
if(strcmp(argv[type.n + 1], "-") != 0)
for(int i = 0; i < strlen(argv[type.n + 1]); i++)
if (argc - type.n >= 3) {
if (strcmp(argv[type.n + 1], "-") != 0)
for (int i = 0; i < strlen(argv[type.n + 1]); i++)
left_invariance |= (1 << (argv[type.n + 1][i] - 'a'));
if(strcmp(argv[type.n + 2], "-") != 0)
for(int i = 0; i < strlen(argv[type.n + 2]); i++)
if (strcmp(argv[type.n + 2], "-") != 0)
for (int i = 0; i < strlen(argv[type.n + 2]); i++)
right_invariance |= (1 << (argv[type.n + 2][i] - 'a'));
}
// generate graph
dq = weyl_generate_bruhat(type, left_invariance, right_invariance);
fprintf(stdout, "digraph test123 {\n");
for(int i = 0; i < dq->count; i++)
for(doublecoset_list_t *current = dq->cosets[i].bruhat_lower; current; current = current->next)
fprintf(stdout, "%s -> %s;\n",
// color ideals
int *color = (int*) malloc(dq->count * sizeof(int));
memset(color, 0, dq->count * sizeof(int));
for(int i = type.n+3; i < argc; i++) {
weylgroup_element_t *elem = &dq->group[0]; // identity
for(int j = 0; j < strlen(argv[i]); j++) {
int gen = argv[i][j] - 'a';
elem = elem->right[gen];
}
color[elem->coset->index] = 1;
}
for(int i = dq->count - 1; i >= 0; i--) {
if(color[i] > 0) {
for(doublecoset_list_t *current = dq->cosets[i].bruhat_lower; current; current = current->next) {
color[current->to->index] = color[i];
}
}
}
fprintf(stdout, "digraph bruhat {\n");
for (int i = 0; i < dq->count; i++) {
fprintf(stdout, "%s [color=\"%s\"];\n",
alphabetize(dq->cosets[i].min, stringbuffer),
alphabetize(current->to->min, stringbuffer2));
color[i] > 0 ? "red" : "black");
for (doublecoset_list_t *current = dq->cosets[i].bruhat_lower; current; current = current->next) {
fprintf(stdout, "%s -> %s [color=\"%s\"];\n",
alphabetize(dq->cosets[i].min, stringbuffer),
alphabetize(current->to->min, stringbuffer2),
color[i] > 0 ? "red" : "black");
}
}
fprintf(stdout, "}\n\n");
// clean up
weyl_destroy_bruhat(dq);
free(color);
free(type.factors);
}