| Step |
Hyp |
Ref |
Expression |
| 1 |
|
latlej.b |
|
| 2 |
|
latlej.l |
|
| 3 |
|
latlej.j |
|
| 4 |
|
simp1 |
|
| 5 |
|
simp2l |
|
| 6 |
|
simp2r |
|
| 7 |
|
simp3l |
|
| 8 |
1 2 3
|
latjlej1 |
|
| 9 |
4 5 6 7 8
|
syl13anc |
|
| 10 |
|
simp3r |
|
| 11 |
1 2 3
|
latjlej2 |
|
| 12 |
4 7 10 6 11
|
syl13anc |
|
| 13 |
1 3
|
latjcl |
|
| 14 |
4 5 7 13
|
syl3anc |
|
| 15 |
1 3
|
latjcl |
|
| 16 |
4 6 7 15
|
syl3anc |
|
| 17 |
1 3
|
latjcl |
|
| 18 |
4 6 10 17
|
syl3anc |
|
| 19 |
1 2
|
lattr |
|
| 20 |
4 14 16 18 19
|
syl13anc |
|
| 21 |
9 12 20
|
syl2and |
|