Step |
Hyp |
Ref |
Expression |
1 |
|
sbbibOLD.y |
|
2 |
|
sbbibOLD.x |
|
3 |
|
nfs1v |
|
4 |
3 2
|
nfbi |
|
5 |
4
|
nf5ri |
|
6 |
5
|
hbal |
|
7 |
|
sbcov |
|
8 |
1
|
sbf |
|
9 |
7 8
|
bitri |
|
10 |
|
spsbbi |
|
11 |
9 10
|
syl5bbr |
|
12 |
6 11
|
alrimih |
|
13 |
|
nfs1v |
|
14 |
1 13
|
nfbi |
|
15 |
14
|
nf5ri |
|
16 |
15
|
hbal |
|
17 |
|
spsbbi |
|
18 |
|
sbcov |
|
19 |
2
|
sbf |
|
20 |
18 19
|
bitri |
|
21 |
17 20
|
syl6bb |
|
22 |
16 21
|
alrimih |
|
23 |
12 22
|
impbii |
|