| Step |
Hyp |
Ref |
Expression |
| 1 |
|
axrep6 |
|
| 2 |
|
19.37v |
|
| 3 |
|
impexp |
|
| 4 |
3
|
albii |
|
| 5 |
|
19.21v |
|
| 6 |
4 5
|
bitri |
|
| 7 |
6
|
exbii |
|
| 8 |
|
df-mo |
|
| 9 |
8
|
imbi2i |
|
| 10 |
2 7 9
|
3bitr4i |
|
| 11 |
10
|
albii |
|
| 12 |
|
df-mo |
|
| 13 |
12
|
albii |
|
| 14 |
|
df-ral |
|
| 15 |
11 13 14
|
3bitr4i |
|
| 16 |
|
rexanid |
|
| 17 |
16
|
bibi2i |
|
| 18 |
17
|
albii |
|
| 19 |
18
|
exbii |
|
| 20 |
1 15 19
|
3imtr3i |
|