Step |
Hyp |
Ref |
Expression |
1 |
|
lssat.s |
|
2 |
|
lssat.a |
|
3 |
|
dfpss3 |
|
4 |
3
|
simprbi |
|
5 |
|
ss2rab |
|
6 |
|
iman |
|
7 |
6
|
ralbii |
|
8 |
5 7
|
bitr2i |
|
9 |
|
simpl1 |
|
10 |
1 2
|
lsatlss |
|
11 |
|
rabss2 |
|
12 |
|
uniss |
|
13 |
9 10 11 12
|
4syl |
|
14 |
|
simpl2 |
|
15 |
|
unimax |
|
16 |
14 15
|
syl |
|
17 |
|
eqid |
|
18 |
17 1
|
lssss |
|
19 |
14 18
|
syl |
|
20 |
16 19
|
eqsstrd |
|
21 |
13 20
|
sstrd |
|
22 |
|
uniss |
|
23 |
22
|
adantl |
|
24 |
|
eqid |
|
25 |
17 24
|
lspss |
|
26 |
9 21 23 25
|
syl3anc |
|
27 |
|
simpl3 |
|
28 |
1 24 2
|
lssats |
|
29 |
9 27 28
|
syl2anc |
|
30 |
1 24 2
|
lssats |
|
31 |
9 14 30
|
syl2anc |
|
32 |
26 29 31
|
3sstr4d |
|
33 |
32
|
ex |
|
34 |
8 33
|
syl5bi |
|
35 |
34
|
con3dimp |
|
36 |
|
dfrex2 |
|
37 |
35 36
|
sylibr |
|
38 |
4 37
|
sylan2 |
|