| 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 |
|