Step |
Hyp |
Ref |
Expression |
1 |
|
df-we |
|
2 |
|
df-so |
|
3 |
|
simpr |
|
4 |
|
ax-1 |
|
5 |
4
|
a1i |
|
6 |
|
fr2nr |
|
7 |
6
|
3adantr3 |
|
8 |
|
breq2 |
|
9 |
8
|
anbi2d |
|
10 |
9
|
notbid |
|
11 |
7 10
|
syl5ibcom |
|
12 |
|
pm2.21 |
|
13 |
11 12
|
syl6 |
|
14 |
|
fr3nr |
|
15 |
|
df-3an |
|
16 |
15
|
biimpri |
|
17 |
16
|
ancoms |
|
18 |
14 17
|
nsyl |
|
19 |
18
|
pm2.21d |
|
20 |
19
|
expd |
|
21 |
5 13 20
|
3jaod |
|
22 |
|
frirr |
|
23 |
22
|
3ad2antr1 |
|
24 |
21 23
|
jctild |
|
25 |
24
|
ex |
|
26 |
25
|
a2d |
|
27 |
26
|
alimdv |
|
28 |
27
|
2alimdv |
|
29 |
|
r3al |
|
30 |
|
r3al |
|
31 |
28 29 30
|
3imtr4g |
|
32 |
|
breq2 |
|
33 |
|
equequ2 |
|
34 |
|
breq1 |
|
35 |
32 33 34
|
3orbi123d |
|
36 |
35
|
ralidmw |
|
37 |
35
|
cbvralvw |
|
38 |
37
|
ralbii |
|
39 |
36 38
|
bitr3i |
|
40 |
39
|
ralbii |
|
41 |
|
df-po |
|
42 |
31 40 41
|
3imtr4g |
|
43 |
42
|
ancrd |
|
44 |
3 43
|
impbid2 |
|
45 |
2 44
|
syl5bb |
|
46 |
45
|
pm5.32i |
|
47 |
1 46
|
bitri |
|