Step |
Hyp |
Ref |
Expression |
1 |
|
setinds.1 |
|
2 |
|
vex |
|
3 |
|
setind |
|
4 |
|
dfss3 |
|
5 |
|
df-sbc |
|
6 |
5
|
ralbii |
|
7 |
|
nfcv |
|
8 |
|
nfsbc1v |
|
9 |
7 8
|
nfralw |
|
10 |
|
nfsbc1v |
|
11 |
9 10
|
nfim |
|
12 |
|
raleq |
|
13 |
|
sbceq1a |
|
14 |
12 13
|
imbi12d |
|
15 |
11 14 1
|
chvarfv |
|
16 |
6 15
|
sylbir |
|
17 |
4 16
|
sylbi |
|
18 |
|
df-sbc |
|
19 |
17 18
|
sylib |
|
20 |
3 19
|
mpg |
|
21 |
20
|
eqcomi |
|
22 |
21
|
abeq2i |
|
23 |
2 22
|
mpbi |
|