Step |
Hyp |
Ref |
Expression |
1 |
|
atlen0.b |
|
2 |
|
atlen0.l |
|
3 |
|
atlen0.z |
|
4 |
|
atlen0.a |
|
5 |
|
simpl1 |
|
6 |
1 3
|
atl0cl |
|
7 |
5 6
|
syl |
|
8 |
|
simpl2 |
|
9 |
5 7 8
|
3jca |
|
10 |
|
simpl3 |
|
11 |
1 4
|
atbase |
|
12 |
10 11
|
syl |
|
13 |
|
eqid |
|
14 |
3 13 4
|
atcvr0 |
|
15 |
5 10 14
|
syl2anc |
|
16 |
|
eqid |
|
17 |
1 16 13
|
cvrlt |
|
18 |
5 7 12 15 17
|
syl31anc |
|
19 |
|
simpr |
|
20 |
|
atlpos |
|
21 |
5 20
|
syl |
|
22 |
1 2 16
|
pltletr |
|
23 |
21 7 12 8 22
|
syl13anc |
|
24 |
18 19 23
|
mp2and |
|
25 |
16
|
pltne |
|
26 |
9 24 25
|
sylc |
|
27 |
26
|
necomd |
|