Step |
Hyp |
Ref |
Expression |
1 |
|
orng0le1.1 |
|
2 |
|
orng0le1.2 |
|
3 |
|
ofld0lt1.3 |
|
4 |
|
isofld |
|
5 |
4
|
simprbi |
|
6 |
|
eqid |
|
7 |
1 2 6
|
orng0le1 |
|
8 |
5 7
|
syl |
|
9 |
|
ofldfld |
|
10 |
|
isfld |
|
11 |
10
|
simplbi |
|
12 |
1 2
|
drngunz |
|
13 |
9 11 12
|
3syl |
|
14 |
13
|
necomd |
|
15 |
1
|
fvexi |
|
16 |
2
|
fvexi |
|
17 |
6 3
|
pltval |
|
18 |
15 16 17
|
mp3an23 |
|
19 |
8 14 18
|
mpbir2and |
|