Step |
Hyp |
Ref |
Expression |
1 |
|
istrkg.p |
|
2 |
|
istrkg.d |
|
3 |
|
istrkg.i |
|
4 |
|
simpl |
|
5 |
|
simpr |
|
6 |
5
|
oveqd |
|
7 |
5
|
oveqd |
|
8 |
6 7
|
eqeq12d |
|
9 |
4 8
|
raleqbidv |
|
10 |
4 9
|
raleqbidv |
|
11 |
5
|
oveqd |
|
12 |
6 11
|
eqeq12d |
|
13 |
12
|
imbi1d |
|
14 |
4 13
|
raleqbidv |
|
15 |
4 14
|
raleqbidv |
|
16 |
4 15
|
raleqbidv |
|
17 |
10 16
|
anbi12d |
|
18 |
1 2 17
|
sbcie2s |
|
19 |
|
df-trkgc |
|
20 |
18 19
|
elab4g |
|