Step |
Hyp |
Ref |
Expression |
1 |
|
islssfg.x |
|
2 |
|
islssfg.s |
|
3 |
|
islssfg.n |
|
4 |
|
islssfg2.b |
|
5 |
1 2 3
|
islssfg |
|
6 |
4 2
|
lssss |
|
7 |
6
|
adantl |
|
8 |
|
sstr2 |
|
9 |
7 8
|
mpan9 |
|
10 |
4 3
|
lspssid |
|
11 |
10
|
adantlr |
|
12 |
9 11
|
impbida |
|
13 |
|
vex |
|
14 |
13
|
elpw |
|
15 |
13
|
elpw |
|
16 |
12 14 15
|
3bitr4g |
|
17 |
|
eleq1 |
|
18 |
17
|
anbi2d |
|
19 |
|
pweq |
|
20 |
19
|
eleq2d |
|
21 |
20
|
bibi1d |
|
22 |
18 21
|
imbi12d |
|
23 |
16 22
|
mpbii |
|
24 |
23
|
com12 |
|
25 |
24
|
adantld |
|
26 |
25
|
pm5.32rd |
|
27 |
|
elin |
|
28 |
27
|
anbi1i |
|
29 |
|
anass |
|
30 |
28 29
|
bitr2i |
|
31 |
26 30
|
bitrdi |
|
32 |
31
|
rexbidv2 |
|
33 |
5 32
|
bitrd |
|