Step |
Hyp |
Ref |
Expression |
1 |
|
brtpos2 |
|
2 |
1
|
adantr |
|
3 |
|
opex |
|
4 |
|
breldmg |
|
5 |
4
|
3expia |
|
6 |
3 5
|
mpan |
|
7 |
6
|
adantr |
|
8 |
|
opelcnvg |
|
9 |
8
|
adantl |
|
10 |
7 9
|
sylibrd |
|
11 |
|
elun1 |
|
12 |
10 11
|
syl6 |
|
13 |
12
|
pm4.71rd |
|
14 |
|
opswap |
|
15 |
14
|
breq1i |
|
16 |
15
|
anbi2i |
|
17 |
13 16
|
bitr4di |
|
18 |
2 17
|
bitr4d |
|
19 |
18
|
ex |
|
20 |
|
brtpos0 |
|
21 |
|
opprc |
|
22 |
21
|
breq1d |
|
23 |
|
ancom |
|
24 |
|
opprc |
|
25 |
24
|
breq1d |
|
26 |
23 25
|
sylnbi |
|
27 |
22 26
|
bibi12d |
|
28 |
20 27
|
syl5ibrcom |
|
29 |
19 28
|
pm2.61d |
|