Step |
Hyp |
Ref |
Expression |
1 |
|
eluni |
|
2 |
|
elrest |
|
3 |
2
|
anbi2d |
|
4 |
3
|
exbidv |
|
5 |
|
eluni |
|
6 |
5
|
bicomi |
|
7 |
6
|
anbi1i |
|
8 |
7
|
a1i |
|
9 |
|
df-rex |
|
10 |
9
|
anbi2i |
|
11 |
|
19.42v |
|
12 |
11
|
bicomi |
|
13 |
10 12
|
bitri |
|
14 |
13
|
exbii |
|
15 |
|
excom |
|
16 |
|
an12 |
|
17 |
16
|
exbii |
|
18 |
|
19.42v |
|
19 |
|
eqimss |
|
20 |
19
|
sseld |
|
21 |
20
|
imdistanri |
|
22 |
|
eqimss2 |
|
23 |
22
|
sseld |
|
24 |
23
|
imdistanri |
|
25 |
21 24
|
impbii |
|
26 |
25
|
exbii |
|
27 |
|
19.42v |
|
28 |
|
vex |
|
29 |
28
|
inex1 |
|
30 |
29
|
isseti |
|
31 |
30
|
biantru |
|
32 |
31
|
bicomi |
|
33 |
|
elin |
|
34 |
32 33
|
bitri |
|
35 |
26 27 34
|
3bitri |
|
36 |
35
|
bianassc |
|
37 |
17 18 36
|
3bitri |
|
38 |
37
|
exbii |
|
39 |
|
19.41v |
|
40 |
38 39
|
bitri |
|
41 |
14 15 40
|
3bitri |
|
42 |
|
elin |
|
43 |
8 41 42
|
3bitr4g |
|
44 |
4 43
|
bitrd |
|
45 |
1 44
|
syl5bb |
|
46 |
45
|
eqrdv |
|