Step |
Hyp |
Ref |
Expression |
1 |
|
eqid |
|
2 |
|
simpllr |
|
3 |
|
simplrl |
|
4 |
|
simpl |
|
5 |
4
|
adantr |
|
6 |
|
snex |
|
7 |
6
|
a1i |
|
8 |
|
opvtxfv |
|
9 |
5 7 8
|
syl2an |
|
10 |
3 9
|
eleqtrrd |
|
11 |
|
simprr |
|
12 |
6
|
a1i |
|
13 |
4 12 8
|
syl2an |
|
14 |
11 13
|
eleqtrrd |
|
15 |
14
|
adantr |
|
16 |
|
opiedgfv |
|
17 |
5 7 16
|
syl2an |
|
18 |
|
simpr |
|
19 |
1 2 10 15 17 18
|
usgr1e |
|
20 |
19
|
ex |
|