Step |
Hyp |
Ref |
Expression |
1 |
|
ovnf.1 |
|
2 |
|
0e0iccpnf |
|
3 |
2
|
a1i |
|
4 |
|
0xr |
|
5 |
4
|
a1i |
|
6 |
|
pnfxr |
|
7 |
6
|
a1i |
|
8 |
1
|
adantr |
|
9 |
|
elpwi |
|
10 |
9
|
adantl |
|
11 |
|
eqid |
|
12 |
8 10 11
|
ovnsupge0 |
|
13 |
8 10 11
|
ovnpnfelsup |
|
14 |
13
|
ne0d |
|
15 |
5 7 12 14
|
inficc |
|
16 |
3 15
|
ifcld |
|
17 |
|
eqid |
|
18 |
16 17
|
fmptd |
|
19 |
1
|
ovnval |
|
20 |
19
|
feq1d |
|
21 |
18 20
|
mpbird |
|