Step |
Hyp |
Ref |
Expression |
1 |
|
pm1.4 |
|
2 |
1
|
ord |
|
3 |
|
pm4.83 |
|
4 |
3
|
biimpi |
|
5 |
2 4
|
sylan2 |
|
6 |
5
|
ex |
|
7 |
6
|
anim1d |
|
8 |
|
orc |
|
9 |
8
|
anim1i |
|
10 |
7 9
|
jctir |
|
11 |
|
olc |
|
12 |
|
olc |
|
13 |
11 12
|
jca |
|
14 |
|
simpl |
|
15 |
13 14
|
imim12i |
|
16 |
15
|
adantr |
|
17 |
10 16
|
impbii |
|
18 |
|
dfbi2 |
|
19 |
|
ordir |
|
20 |
19
|
bicomi |
|
21 |
20
|
bibi1i |
|
22 |
17 18 21
|
3bitr2i |
|