Step |
Hyp |
Ref |
Expression |
1 |
|
resttop |
|
2 |
|
islly |
|
3 |
2
|
baib |
|
4 |
1 3
|
syl |
|
5 |
|
vex |
|
6 |
5
|
inex1 |
|
7 |
6
|
a1i |
|
8 |
|
elrest |
|
9 |
|
simpr |
|
10 |
9
|
raleqdv |
|
11 |
|
rexin |
|
12 |
|
vex |
|
13 |
12
|
inex1 |
|
14 |
13
|
a1i |
|
15 |
|
elrest |
|
16 |
15
|
ad2antrr |
|
17 |
|
3anass |
|
18 |
|
simpr |
|
19 |
|
simpllr |
|
20 |
18 19
|
sseq12d |
|
21 |
|
velpw |
|
22 |
|
inss2 |
|
23 |
22
|
biantru |
|
24 |
|
ssin |
|
25 |
23 24
|
bitri |
|
26 |
20 21 25
|
3bitr4g |
|
27 |
18
|
eleq2d |
|
28 |
|
simplr |
|
29 |
28
|
elin2d |
|
30 |
29
|
biantrud |
|
31 |
|
elin |
|
32 |
30 31
|
bitr4di |
|
33 |
27 32
|
bitr4d |
|
34 |
18
|
oveq2d |
|
35 |
|
simp-4l |
|
36 |
22
|
a1i |
|
37 |
|
simplr |
|
38 |
37
|
ad2antrr |
|
39 |
|
restabs |
|
40 |
35 36 38 39
|
syl3anc |
|
41 |
34 40
|
eqtrd |
|
42 |
41
|
eleq1d |
|
43 |
26 33 42
|
3anbi123d |
|
44 |
17 43
|
bitr3id |
|
45 |
14 16 44
|
rexxfr2d |
|
46 |
11 45
|
syl5bb |
|
47 |
46
|
ralbidva |
|
48 |
10 47
|
bitrd |
|
49 |
7 8 48
|
ralxfr2d |
|
50 |
4 49
|
bitrd |
|