| Step |
Hyp |
Ref |
Expression |
| 1 |
|
reex |
|
| 2 |
|
elpm2r |
|
| 3 |
1 1 2
|
mpanl12 |
|
| 4 |
|
ello1 |
|
| 5 |
4
|
baib |
|
| 6 |
3 5
|
syl |
|
| 7 |
|
elin |
|
| 8 |
|
fdm |
|
| 9 |
8
|
ad3antrrr |
|
| 10 |
9
|
eleq2d |
|
| 11 |
10
|
anbi1d |
|
| 12 |
|
simpllr |
|
| 13 |
12
|
sselda |
|
| 14 |
|
simpllr |
|
| 15 |
|
elicopnf |
|
| 16 |
14 15
|
syl |
|
| 17 |
13 16
|
mpbirand |
|
| 18 |
17
|
pm5.32da |
|
| 19 |
11 18
|
bitrd |
|
| 20 |
7 19
|
bitrid |
|
| 21 |
20
|
imbi1d |
|
| 22 |
|
impexp |
|
| 23 |
21 22
|
bitrdi |
|
| 24 |
23
|
ralbidv2 |
|
| 25 |
24
|
rexbidva |
|
| 26 |
25
|
rexbidva |
|
| 27 |
6 26
|
bitrd |
|