Step |
Hyp |
Ref |
Expression |
1 |
|
latlej.b |
|
2 |
|
latlej.l |
|
3 |
|
latlej.j |
|
4 |
1 2 3
|
latlej1 |
|
5 |
4
|
3adant3r1 |
|
6 |
|
simpl |
|
7 |
|
simpr1 |
|
8 |
|
simpr2 |
|
9 |
1 3
|
latjcl |
|
10 |
9
|
3adant3r1 |
|
11 |
1 2
|
lattr |
|
12 |
6 7 8 10 11
|
syl13anc |
|
13 |
5 12
|
mpan2d |
|
14 |
13
|
con3d |
|
15 |
1 2 3
|
latlej2 |
|
16 |
15
|
3adant3r1 |
|
17 |
|
simpr3 |
|
18 |
1 2
|
lattr |
|
19 |
6 7 17 10 18
|
syl13anc |
|
20 |
16 19
|
mpan2d |
|
21 |
20
|
con3d |
|
22 |
14 21
|
jcad |
|
23 |
22
|
3impia |
|