Step |
Hyp |
Ref |
Expression |
1 |
|
idn1 |
|
2 |
|
idn3 |
|
3 |
|
en3lplem1VD |
|
4 |
1 2 3
|
e13 |
|
5 |
4
|
in3 |
|
6 |
|
3anrot |
|
7 |
1 6
|
e1bi |
|
8 |
|
idn3 |
|
9 |
|
en3lplem1VD |
|
10 |
7 8 9
|
e13 |
|
11 |
|
tprot |
|
12 |
11
|
eleq2i |
|
13 |
12
|
anbi1i |
|
14 |
13
|
exbii |
|
15 |
10 14
|
e3bir |
|
16 |
15
|
in3 |
|
17 |
|
jao |
|
18 |
5 16 17
|
e22 |
|
19 |
|
3anrot |
|
20 |
1 19
|
e1bir |
|
21 |
|
idn3 |
|
22 |
|
en3lplem1VD |
|
23 |
20 21 22
|
e13 |
|
24 |
|
tprot |
|
25 |
24
|
eleq2i |
|
26 |
25
|
anbi1i |
|
27 |
26
|
exbii |
|
28 |
23 27
|
e3bi |
|
29 |
28
|
in3 |
|
30 |
|
idn2 |
|
31 |
|
dftp2 |
|
32 |
31
|
eleq2i |
|
33 |
30 32
|
e2bi |
|
34 |
|
abid |
|
35 |
33 34
|
e2bi |
|
36 |
|
df-3or |
|
37 |
35 36
|
e2bi |
|
38 |
|
jao |
|
39 |
18 29 37 38
|
e222 |
|
40 |
39
|
in2 |
|
41 |
40
|
in1 |
|