Step |
Hyp |
Ref |
Expression |
1 |
|
rrx2plord.o |
|
2 |
|
rrx2plord2.r |
|
3 |
1
|
rrx2plord |
|
4 |
3
|
3adant3 |
|
5 |
|
eqid |
|
6 |
5 2
|
rrx2pxel |
|
7 |
6
|
adantr |
|
8 |
|
ltne |
|
9 |
8
|
necomd |
|
10 |
7 9
|
sylan |
|
11 |
10
|
ex |
|
12 |
|
eqneqall |
|
13 |
11 12
|
syl9 |
|
14 |
13
|
3impia |
|
15 |
14
|
com12 |
|
16 |
|
simpr |
|
17 |
16
|
a1d |
|
18 |
15 17
|
jaoi |
|
19 |
18
|
com12 |
|
20 |
|
olc |
|
21 |
20
|
ex |
|
22 |
21
|
3ad2ant3 |
|
23 |
19 22
|
impbid |
|
24 |
4 23
|
bitrd |
|