Step |
Hyp |
Ref |
Expression |
1 |
|
ordttopon.3 |
|
2 |
|
eqid |
|
3 |
|
eqid |
|
4 |
1 2 3
|
ordtval |
|
5 |
|
fibas |
|
6 |
|
tgtopon |
|
7 |
5 6
|
ax-mp |
|
8 |
4 7
|
eqeltrdi |
|
9 |
1 2 3
|
ordtuni |
|
10 |
|
dmexg |
|
11 |
1 10
|
eqeltrid |
|
12 |
9 11
|
eqeltrrd |
|
13 |
|
uniexb |
|
14 |
12 13
|
sylibr |
|
15 |
|
fiuni |
|
16 |
14 15
|
syl |
|
17 |
9 16
|
eqtrd |
|
18 |
17
|
fveq2d |
|
19 |
8 18
|
eleqtrrd |
|