Step |
Hyp |
Ref |
Expression |
1 |
|
elcncf |
|
2 |
|
simplll |
|
3 |
|
simprl |
|
4 |
2 3
|
sseldd |
|
5 |
|
simprr |
|
6 |
2 5
|
sseldd |
|
7 |
4 6
|
abssubd |
|
8 |
7
|
breq1d |
|
9 |
|
simpllr |
|
10 |
|
simplr |
|
11 |
10 3
|
ffvelrnd |
|
12 |
9 11
|
sseldd |
|
13 |
10 5
|
ffvelrnd |
|
14 |
9 13
|
sseldd |
|
15 |
12 14
|
abssubd |
|
16 |
15
|
breq1d |
|
17 |
8 16
|
imbi12d |
|
18 |
17
|
anassrs |
|
19 |
18
|
ralbidva |
|
20 |
19
|
rexbidv |
|
21 |
20
|
ralbidv |
|
22 |
21
|
ralbidva |
|
23 |
22
|
pm5.32da |
|
24 |
1 23
|
bitrd |
|