Step |
Hyp |
Ref |
Expression |
1 |
|
odcl.1 |
|
2 |
|
odcl.2 |
|
3 |
|
odid.3 |
|
4 |
|
odid.4 |
|
5 |
|
zsubcl |
|
6 |
1 2 3 4
|
oddvds |
|
7 |
5 6
|
syl3an3 |
|
8 |
|
simp1 |
|
9 |
|
simp3l |
|
10 |
|
simp3r |
|
11 |
|
simp2 |
|
12 |
|
eqid |
|
13 |
1 3 12
|
mulgsubdir |
|
14 |
8 9 10 11 13
|
syl13anc |
|
15 |
14
|
eqeq1d |
|
16 |
1 3
|
mulgcl |
|
17 |
8 9 11 16
|
syl3anc |
|
18 |
1 3
|
mulgcl |
|
19 |
8 10 11 18
|
syl3anc |
|
20 |
1 4 12
|
grpsubeq0 |
|
21 |
8 17 19 20
|
syl3anc |
|
22 |
7 15 21
|
3bitrd |
|