Step |
Hyp |
Ref |
Expression |
1 |
|
rneq |
|
2 |
1
|
eleq1d |
|
3 |
|
eleq1 |
|
4 |
|
id |
|
5 |
4 4
|
coeq12d |
|
6 |
5 4
|
eqeq12d |
|
7 |
3 6
|
anbi12d |
|
8 |
|
eleq1 |
|
9 |
|
id |
|
10 |
9 9
|
coeq12d |
|
11 |
10 9
|
eqeq12d |
|
12 |
8 11
|
anbi12d |
|
13 |
|
idhmop |
|
14 |
|
hoif |
|
15 |
|
f1of |
|
16 |
14 15
|
ax-mp |
|
17 |
16
|
hoid1i |
|
18 |
13 17
|
pm3.2i |
|
19 |
7 12 18
|
elimhyp |
|
20 |
19
|
simpli |
|
21 |
19
|
simpri |
|
22 |
20 21
|
hmopidmchi |
|
23 |
2 22
|
dedth |
|