| Step |
Hyp |
Ref |
Expression |
| 1 |
|
ordtypelem.1 |
|
| 2 |
|
ordtypelem.2 |
|
| 3 |
|
ordtypelem.3 |
|
| 4 |
|
ordtypelem.5 |
|
| 5 |
|
ordtypelem.6 |
|
| 6 |
|
ordtypelem.7 |
|
| 7 |
|
ordtypelem.8 |
|
| 8 |
1 2 3 4 5 6 7
|
ordtypelem2 |
|
| 9 |
1
|
tfr1a |
|
| 10 |
9
|
simpri |
|
| 11 |
|
limord |
|
| 12 |
10 11
|
ax-mp |
|
| 13 |
|
ordin |
|
| 14 |
8 12 13
|
sylancl |
|
| 15 |
1 2 3 4 5 6 7
|
ordtypelem4 |
|
| 16 |
15
|
fdmd |
|
| 17 |
|
ordeq |
|
| 18 |
16 17
|
syl |
|
| 19 |
14 18
|
mpbird |
|
| 20 |
15
|
ffdmd |
|
| 21 |
19 20
|
jca |
|