Step |
Hyp |
Ref |
Expression |
1 |
|
tposoprab.1 |
|
2 |
1
|
tposeqi |
|
3 |
|
reldmoprab |
|
4 |
|
dftpos3 |
|
5 |
3 4
|
ax-mp |
|
6 |
|
nfcv |
|
7 |
|
nfoprab2 |
|
8 |
|
nfcv |
|
9 |
6 7 8
|
nfbr |
|
10 |
|
nfcv |
|
11 |
|
nfoprab1 |
|
12 |
|
nfcv |
|
13 |
10 11 12
|
nfbr |
|
14 |
|
nfv |
|
15 |
|
nfv |
|
16 |
|
opeq12 |
|
17 |
16
|
ancoms |
|
18 |
17
|
breq1d |
|
19 |
9 13 14 15 18
|
cbvoprab12 |
|
20 |
|
nfcv |
|
21 |
|
nfoprab3 |
|
22 |
|
nfcv |
|
23 |
20 21 22
|
nfbr |
|
24 |
|
nfv |
|
25 |
|
breq2 |
|
26 |
|
df-br |
|
27 |
|
oprabidw |
|
28 |
26 27
|
bitri |
|
29 |
25 28
|
bitrdi |
|
30 |
23 24 29
|
cbvoprab3 |
|
31 |
19 30
|
eqtri |
|
32 |
2 5 31
|
3eqtri |
|