Step |
Hyp |
Ref |
Expression |
1 |
|
istrkg.p |
|
2 |
|
istrkg.d |
|
3 |
|
istrkg.i |
|
4 |
|
simpl |
|
5 |
4
|
eqcomd |
|
6 |
5
|
adantr |
|
7 |
6
|
adantr |
|
8 |
7
|
adantr |
|
9 |
8
|
adantr |
|
10 |
|
simp-6r |
|
11 |
10
|
eqcomd |
|
12 |
11
|
oveqd |
|
13 |
12
|
eleq2d |
|
14 |
11
|
oveqd |
|
15 |
14
|
eleq2d |
|
16 |
13 15
|
3anbi12d |
|
17 |
9
|
adantr |
|
18 |
17
|
adantr |
|
19 |
10
|
ad2antrr |
|
20 |
19
|
eqcomd |
|
21 |
20
|
oveqd |
|
22 |
21
|
eleq2d |
|
23 |
20
|
oveqd |
|
24 |
23
|
eleq2d |
|
25 |
20
|
oveqd |
|
26 |
25
|
eleq2d |
|
27 |
22 24 26
|
3anbi123d |
|
28 |
18 27
|
rexeqbidva |
|
29 |
17 28
|
rexeqbidva |
|
30 |
16 29
|
imbi12d |
|
31 |
9 30
|
raleqbidva |
|
32 |
8 31
|
raleqbidva |
|
33 |
7 32
|
raleqbidva |
|
34 |
6 33
|
raleqbidva |
|
35 |
5 34
|
raleqbidva |
|
36 |
1 3 35
|
sbcie2s |
|
37 |
|
df-trkge |
|
38 |
36 37
|
elab4g |
|