Step |
Hyp |
Ref |
Expression |
1 |
|
clnbgrel.v |
|
2 |
|
clnbgrel.e |
|
3 |
1
|
clnbgrcl |
|
4 |
3
|
pm4.71ri |
|
5 |
1 2
|
clnbgrval |
|
6 |
5
|
eleq2d |
|
7 |
|
elun |
|
8 |
|
elsn2g |
|
9 |
|
preq2 |
|
10 |
9
|
sseq1d |
|
11 |
10
|
rexbidv |
|
12 |
11
|
elrab |
|
13 |
12
|
a1i |
|
14 |
8 13
|
orbi12d |
|
15 |
7 14
|
bitrid |
|
16 |
|
eleq1 |
|
17 |
16
|
biimparc |
|
18 |
|
orc |
|
19 |
18
|
adantl |
|
20 |
17 19
|
jca |
|
21 |
20
|
ex |
|
22 |
|
olc |
|
23 |
22
|
anim2i |
|
24 |
23
|
a1i |
|
25 |
21 24
|
jaod |
|
26 |
|
orc |
|
27 |
26
|
a1i |
|
28 |
|
olc |
|
29 |
28
|
ex |
|
30 |
29
|
adantl |
|
31 |
27 30
|
jaod |
|
32 |
31
|
expimpd |
|
33 |
25 32
|
impbid |
|
34 |
6 15 33
|
3bitrd |
|
35 |
34
|
pm5.32i |
|
36 |
|
anass |
|
37 |
36
|
bicomi |
|
38 |
|
ancom |
|
39 |
37 38
|
bianbi |
|
40 |
4 35 39
|
3bitri |
|