| Step |
Hyp |
Ref |
Expression |
| 1 |
|
bnj978.1 |
|
| 2 |
|
bnj978.2 |
|
| 3 |
1 2
|
sylbir |
|
| 4 |
3
|
gen2 |
|
| 5 |
|
bnj253 |
|
| 6 |
5
|
imbi1i |
|
| 7 |
6
|
2albii |
|
| 8 |
|
3impexp |
|
| 9 |
8
|
2albii |
|
| 10 |
|
19.21v |
|
| 11 |
|
19.21v |
|
| 12 |
11
|
imbi2i |
|
| 13 |
10 12
|
bitri |
|
| 14 |
13
|
albii |
|
| 15 |
|
19.21v |
|
| 16 |
|
df-ral |
|
| 17 |
16
|
bicomi |
|
| 18 |
17
|
imbi2i |
|
| 19 |
14 15 18
|
3bitri |
|
| 20 |
7 9 19
|
3bitri |
|
| 21 |
4 20
|
mpbi |
|
| 22 |
|
df-ss |
|
| 23 |
22
|
ralbii |
|
| 24 |
21 23
|
sylibr |
|
| 25 |
|
df-bnj19 |
|
| 26 |
24 25
|
sylibr |
|