Step |
Hyp |
Ref |
Expression |
1 |
|
wun0.1 |
|
2 |
|
wunfi.2 |
|
3 |
|
wunfi.3 |
|
4 |
|
sseq1 |
|
5 |
|
eleq1 |
|
6 |
4 5
|
imbi12d |
|
7 |
6
|
imbi2d |
|
8 |
|
sseq1 |
|
9 |
|
eleq1 |
|
10 |
8 9
|
imbi12d |
|
11 |
10
|
imbi2d |
|
12 |
|
sseq1 |
|
13 |
|
eleq1 |
|
14 |
12 13
|
imbi12d |
|
15 |
14
|
imbi2d |
|
16 |
|
sseq1 |
|
17 |
|
eleq1 |
|
18 |
16 17
|
imbi12d |
|
19 |
18
|
imbi2d |
|
20 |
1
|
wun0 |
|
21 |
20
|
a1d |
|
22 |
|
ssun1 |
|
23 |
|
sstr |
|
24 |
22 23
|
mpan |
|
25 |
24
|
imim1i |
|
26 |
1
|
adantr |
|
27 |
|
simprr |
|
28 |
|
simprl |
|
29 |
28
|
unssbd |
|
30 |
|
vex |
|
31 |
30
|
snss |
|
32 |
29 31
|
sylibr |
|
33 |
26 32
|
wunsn |
|
34 |
26 27 33
|
wunun |
|
35 |
34
|
exp32 |
|
36 |
35
|
a2d |
|
37 |
25 36
|
syl5 |
|
38 |
37
|
a2i |
|
39 |
38
|
a1i |
|
40 |
7 11 15 19 21 39
|
findcard2 |
|
41 |
3 40
|
mpcom |
|
42 |
2 41
|
mpd |
|