Step |
Hyp |
Ref |
Expression |
1 |
|
noinfdm.1 |
|
2 |
|
iffalse |
|
3 |
1 2
|
eqtrid |
|
4 |
3
|
dmeqd |
|
5 |
|
iotaex |
|
6 |
|
eqid |
|
7 |
5 6
|
dmmpti |
|
8 |
|
eleq1w |
|
9 |
|
suceq |
|
10 |
9
|
reseq2d |
|
11 |
9
|
reseq2d |
|
12 |
10 11
|
eqeq12d |
|
13 |
12
|
imbi2d |
|
14 |
13
|
ralbidv |
|
15 |
8 14
|
anbi12d |
|
16 |
15
|
rexbidv |
|
17 |
|
dmeq |
|
18 |
17
|
eleq2d |
|
19 |
|
breq1 |
|
20 |
19
|
notbid |
|
21 |
|
reseq1 |
|
22 |
21
|
eqeq1d |
|
23 |
20 22
|
imbi12d |
|
24 |
23
|
ralbidv |
|
25 |
|
breq2 |
|
26 |
25
|
notbid |
|
27 |
|
reseq1 |
|
28 |
27
|
eqeq2d |
|
29 |
26 28
|
imbi12d |
|
30 |
29
|
cbvralvw |
|
31 |
24 30
|
bitrdi |
|
32 |
18 31
|
anbi12d |
|
33 |
32
|
cbvrexvw |
|
34 |
16 33
|
bitrdi |
|
35 |
34
|
cbvabv |
|
36 |
7 35
|
eqtri |
|
37 |
4 36
|
eqtrdi |
|