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 |
|