| Step |
Hyp |
Ref |
Expression |
| 1 |
|
ax-hilex |
|
| 2 |
|
chex |
|
| 3 |
1 2
|
elmap |
|
| 4 |
3
|
anbi1i |
|
| 5 |
|
fveq1 |
|
| 6 |
5
|
fveqeq2d |
|
| 7 |
|
fveq1 |
|
| 8 |
|
fveq1 |
|
| 9 |
7 8
|
oveq12d |
|
| 10 |
9
|
eqeq1d |
|
| 11 |
|
fveq1 |
|
| 12 |
7 8
|
oveq12d |
|
| 13 |
11 12
|
eqeq12d |
|
| 14 |
10 13
|
anbi12d |
|
| 15 |
14
|
imbi2d |
|
| 16 |
15
|
2ralbidv |
|
| 17 |
6 16
|
anbi12d |
|
| 18 |
|
df-hst |
|
| 19 |
17 18
|
elrab2 |
|
| 20 |
|
3anass |
|
| 21 |
4 19 20
|
3bitr4i |
|