Step |
Hyp |
Ref |
Expression |
1 |
|
idn2 |
|
2 |
|
simpl |
|
3 |
1 2
|
e2 |
|
4 |
|
idn3 |
|
5 |
|
idn1 |
|
6 |
|
rspsbc |
|
7 |
4 5 6
|
e31 |
|
8 |
|
trsbc |
|
9 |
8
|
biimpd |
|
10 |
4 7 9
|
e33 |
|
11 |
|
simpr |
|
12 |
1 11
|
e2 |
|
13 |
|
elintg |
|
14 |
13
|
ibi |
|
15 |
12 14
|
e2 |
|
16 |
|
rsp |
|
17 |
15 16
|
e2 |
|
18 |
|
pm2.27 |
|
19 |
4 17 18
|
e32 |
|
20 |
|
trel |
|
21 |
20
|
expd |
|
22 |
10 3 19 21
|
e323 |
|
23 |
22
|
in3 |
|
24 |
23
|
gen21 |
|
25 |
|
df-ral |
|
26 |
25
|
biimpri |
|
27 |
24 26
|
e2 |
|
28 |
|
elintg |
|
29 |
28
|
biimprd |
|
30 |
3 27 29
|
e22 |
|
31 |
30
|
in2 |
|
32 |
31
|
gen12 |
|
33 |
|
dftr2 |
|
34 |
33
|
biimpri |
|
35 |
32 34
|
e1a |
|
36 |
35
|
in1 |
|