Step |
Hyp |
Ref |
Expression |
1 |
|
df-co |
|
2 |
|
nfcv |
|
3 |
|
nfopab1 |
|
4 |
|
nfcv |
|
5 |
2 3 4
|
nfbr |
|
6 |
|
nfv |
|
7 |
5 6
|
nfan |
|
8 |
7
|
nfex |
|
9 |
|
nfv |
|
10 |
|
nfcv |
|
11 |
|
nfopab2 |
|
12 |
|
nfcv |
|
13 |
10 11 12
|
nfbr |
|
14 |
9 13
|
nfan |
|
15 |
14
|
nfex |
|
16 |
|
nfv |
|
17 |
|
nfv |
|
18 |
|
nfv |
|
19 |
|
nfcv |
|
20 |
|
nfopab2 |
|
21 |
|
nfcv |
|
22 |
19 20 21
|
nfbr |
|
23 |
|
nfopab1 |
|
24 |
|
nfcv |
|
25 |
21 23 24
|
nfbr |
|
26 |
22 25
|
nfan |
|
27 |
26
|
a1i |
|
28 |
|
simpll |
|
29 |
|
simpr |
|
30 |
28 29
|
breq12d |
|
31 |
|
simplr |
|
32 |
29 31
|
breq12d |
|
33 |
30 32
|
anbi12d |
|
34 |
33
|
ex |
|
35 |
18 27 34
|
cbvexdw |
|
36 |
8 15 16 17 35
|
cbvopab |
|
37 |
|
bj-opelopabid |
|
38 |
|
bj-opelopabid |
|
39 |
37 38
|
anbi12i |
|
40 |
39
|
exbii |
|
41 |
40
|
opabbii |
|
42 |
1 36 41
|
3eqtri |
|