Step |
Hyp |
Ref |
Expression |
1 |
|
vtocl2dOLD.a |
|
2 |
|
vtocl2dOLD.b |
|
3 |
|
vtocl2dOLD.1 |
|
4 |
|
vtocl2dOLD.3 |
|
5 |
|
nfcv |
|
6 |
|
nfcv |
|
7 |
|
nfcv |
|
8 |
|
nfv |
|
9 |
|
nfsbc1v |
|
10 |
8 9
|
nfim |
|
11 |
|
nfv |
|
12 |
|
sbceq1a |
|
13 |
12
|
imbi2d |
|
14 |
|
sbceq1a |
|
15 |
|
nfv |
|
16 |
|
nfv |
|
17 |
|
nfv |
|
18 |
15 16 17 3
|
sbc2iegf |
|
19 |
1 2 18
|
syl2anc |
|
20 |
14 19
|
sylan9bb |
|
21 |
20
|
pm5.74da |
|
22 |
5 6 7 10 11 13 21 4
|
vtocl2gf |
|
23 |
2 1 22
|
syl2anc |
|
24 |
23
|
pm2.43i |
|