Step |
Hyp |
Ref |
Expression |
1 |
|
cvlexch.b |
|
2 |
|
cvlexch.l |
|
3 |
|
cvlexch.j |
|
4 |
|
cvlexch.a |
|
5 |
1 2 3 4
|
cvlexch1 |
|
6 |
|
cvllat |
|
7 |
6
|
3ad2ant1 |
|
8 |
|
simp22 |
|
9 |
1 4
|
atbase |
|
10 |
8 9
|
syl |
|
11 |
|
simp23 |
|
12 |
1 3
|
latjcom |
|
13 |
7 10 11 12
|
syl3anc |
|
14 |
13
|
breq2d |
|
15 |
|
simp21 |
|
16 |
1 4
|
atbase |
|
17 |
15 16
|
syl |
|
18 |
1 3
|
latjcom |
|
19 |
7 17 11 18
|
syl3anc |
|
20 |
19
|
breq2d |
|
21 |
5 14 20
|
3imtr4d |
|