Step |
Hyp |
Ref |
Expression |
1 |
|
2polss.a |
|
2 |
|
2polss.p |
|
3 |
|
hlclat |
|
4 |
3
|
ad3antrrr |
|
5 |
|
simpr |
|
6 |
|
simpllr |
|
7 |
|
eqid |
|
8 |
7 1
|
atssbase |
|
9 |
6 8
|
sstrdi |
|
10 |
|
eqid |
|
11 |
|
eqid |
|
12 |
7 10 11
|
lubel |
|
13 |
4 5 9 12
|
syl3anc |
|
14 |
13
|
ex |
|
15 |
14
|
ss2rabdv |
|
16 |
|
sseqin2 |
|
17 |
16
|
biimpi |
|
18 |
17
|
adantl |
|
19 |
|
dfin5 |
|
20 |
18 19
|
eqtr3di |
|
21 |
|
eqid |
|
22 |
11 1 21 2
|
2polvalN |
|
23 |
|
sstr |
|
24 |
8 23
|
mpan2 |
|
25 |
7 11
|
clatlubcl |
|
26 |
3 24 25
|
syl2an |
|
27 |
7 10 1 21
|
pmapval |
|
28 |
26 27
|
syldan |
|
29 |
22 28
|
eqtrd |
|
30 |
15 20 29
|
3sstr4d |
|