Step |
Hyp |
Ref |
Expression |
1 |
|
cnvcnvintabd.x |
|
2 |
|
cnvcnv |
|
3 |
2
|
eleq2i |
|
4 |
|
elin |
|
5 |
4
|
rbaib |
|
6 |
3 5
|
syl5bb |
|
7 |
6
|
bicomd |
|
8 |
7
|
imbi2d |
|
9 |
8
|
albidv |
|
10 |
9
|
pm5.32i |
|
11 |
|
pm5.5 |
|
12 |
1 11
|
syl |
|
13 |
12
|
bicomd |
|
14 |
13
|
anbi1d |
|
15 |
10 14
|
syl5bb |
|
16 |
|
elcnvcnvintab |
|
17 |
|
vex |
|
18 |
|
cnvexg |
|
19 |
|
cnvexg |
|
20 |
17 18 19
|
mp2b |
|
21 |
|
relcnv |
|
22 |
|
df-rel |
|
23 |
21 22
|
mpbi |
|
24 |
20 23
|
elmapintrab |
|
25 |
24
|
elv |
|
26 |
15 16 25
|
3bitr4g |
|
27 |
26
|
eqrdv |
|