Step |
Hyp |
Ref |
Expression |
1 |
|
ablsimpnosubgd.1 |
|
2 |
|
ablsimpnosubgd.2 |
|
3 |
|
ablsimpnosubgd.3 |
|
4 |
|
ablsimpnosubgd.4 |
|
5 |
|
ablsimpnosubgd.5 |
|
6 |
|
ablsimpnosubgd.6 |
|
7 |
|
ablsimpnosubgd.7 |
|
8 |
|
elsni |
|
9 |
7 8
|
nsyl |
|
10 |
|
eleq2 |
|
11 |
6 10
|
syl5ibcom |
|
12 |
9 11
|
mtod |
|
13 |
12
|
pm2.21d |
|
14 |
|
idd |
|
15 |
|
ablnsg |
|
16 |
15
|
eqcomd |
|
17 |
3 16
|
syl |
|
18 |
5 17
|
eleqtrd |
|
19 |
1 2 4 18
|
simpgnsgeqd |
|
20 |
13 14 19
|
mpjaod |
|