Step |
Hyp |
Ref |
Expression |
1 |
|
r19.26 |
|
2 |
|
vex |
|
3 |
2 2
|
brcnv |
|
4 |
|
id |
|
5 |
4 4
|
breq12d |
|
6 |
3 5
|
syl5bb |
|
7 |
6
|
notbid |
|
8 |
7
|
cbvralvw |
|
9 |
|
vex |
|
10 |
2 9
|
brcnv |
|
11 |
|
vex |
|
12 |
9 11
|
brcnv |
|
13 |
10 12
|
anbi12ci |
|
14 |
2 11
|
brcnv |
|
15 |
13 14
|
imbi12i |
|
16 |
15
|
ralbii |
|
17 |
8 16
|
anbi12i |
|
18 |
1 17
|
bitr2i |
|
19 |
18
|
ralbii |
|
20 |
|
r19.26 |
|
21 |
|
ralidm |
|
22 |
|
rzal |
|
23 |
|
rzal |
|
24 |
22 23
|
2thd |
|
25 |
|
r19.3rzv |
|
26 |
25
|
ralbidv |
|
27 |
24 26
|
pm2.61ine |
|
28 |
21 27
|
bitr2i |
|
29 |
28
|
anbi1i |
|
30 |
20 29
|
bitri |
|
31 |
|
r19.26 |
|
32 |
31
|
ralbii |
|
33 |
|
r19.26 |
|
34 |
30 32 33
|
3bitr4i |
|
35 |
|
ralcom |
|
36 |
19 34 35
|
3bitr4i |
|
37 |
36
|
ralbii |
|
38 |
|
ralcom |
|
39 |
|
ralcom |
|
40 |
37 38 39
|
3bitr4i |
|
41 |
|
df-po |
|
42 |
|
df-po |
|
43 |
40 41 42
|
3bitr4i |
|