Step |
Hyp |
Ref |
Expression |
1 |
|
rrx2pnecoorneor.i |
|
2 |
|
rrx2pnecoorneor.b |
|
3 |
|
rrx2pnedifcoorneor.a |
|
4 |
|
rrx2pnedifcoorneor.b |
|
5 |
1 2
|
rrx2pnecoorneor |
|
6 |
3
|
neeq1i |
|
7 |
4
|
neeq1i |
|
8 |
6 7
|
orbi12i |
|
9 |
1 2
|
rrx2pxel |
|
10 |
9
|
recnd |
|
11 |
1 2
|
rrx2pxel |
|
12 |
11
|
recnd |
|
13 |
|
subeq0 |
|
14 |
10 12 13
|
syl2anr |
|
15 |
14
|
necon3bid |
|
16 |
1 2
|
rrx2pyel |
|
17 |
16
|
recnd |
|
18 |
1 2
|
rrx2pyel |
|
19 |
18
|
recnd |
|
20 |
|
subeq0 |
|
21 |
17 19 20
|
syl2anr |
|
22 |
21
|
necon3bid |
|
23 |
15 22
|
orbi12d |
|
24 |
|
necom |
|
25 |
|
necom |
|
26 |
24 25
|
orbi12i |
|
27 |
23 26
|
syl6bb |
|
28 |
8 27
|
syl5bb |
|
29 |
28
|
3adant3 |
|
30 |
5 29
|
mpbird |
|