| Step |
Hyp |
Ref |
Expression |
| 1 |
|
4at.l |
|
| 2 |
|
4at.j |
|
| 3 |
|
4at.a |
|
| 4 |
|
simp11 |
|
| 5 |
|
simp21 |
|
| 6 |
|
simp22 |
|
| 7 |
4
|
hllatd |
|
| 8 |
|
simp1 |
|
| 9 |
|
eqid |
|
| 10 |
9 2 3
|
hlatjcl |
|
| 11 |
8 10
|
syl |
|
| 12 |
|
simp23 |
|
| 13 |
9 3
|
atbase |
|
| 14 |
12 13
|
syl |
|
| 15 |
9 2
|
latjcl |
|
| 16 |
7 11 14 15
|
syl3anc |
|
| 17 |
|
simp3 |
|
| 18 |
9 1 2 3
|
hlexchb2 |
|
| 19 |
4 5 6 16 17 18
|
syl131anc |
|
| 20 |
1 2 3
|
4atlem4c |
|
| 21 |
8 6 12 20
|
syl12anc |
|
| 22 |
21
|
breq2d |
|
| 23 |
1 2 3
|
4atlem4c |
|
| 24 |
8 5 12 23
|
syl12anc |
|
| 25 |
24 21
|
eqeq12d |
|
| 26 |
19 22 25
|
3bitr4d |
|