Step |
Hyp |
Ref |
Expression |
1 |
|
usgr2pthlem.v |
|
2 |
|
usgr2pthlem.i |
|
3 |
1 2
|
usgr2pth |
|
4 |
|
r19.42v |
|
5 |
|
rexdifpr |
|
6 |
4 5
|
bitr3i |
|
7 |
6
|
rexbii |
|
8 |
|
rexcom |
|
9 |
|
df-3an |
|
10 |
|
anass |
|
11 |
|
anass |
|
12 |
|
anass |
|
13 |
|
ancom |
|
14 |
|
necom |
|
15 |
14
|
anbi2ci |
|
16 |
15
|
anbi1i |
|
17 |
12 13 16
|
3bitri |
|
18 |
17
|
anbi1i |
|
19 |
|
df-3an |
|
20 |
11 18 19
|
3bitr4i |
|
21 |
9 10 20
|
3bitr2i |
|
22 |
21
|
rexbii |
|
23 |
|
rexdifpr |
|
24 |
|
r19.42v |
|
25 |
22 23 24
|
3bitr2i |
|
26 |
25
|
rexbii |
|
27 |
7 8 26
|
3bitri |
|
28 |
|
rexdifsn |
|
29 |
|
rexdifsn |
|
30 |
27 28 29
|
3bitr4i |
|
31 |
30
|
a1i |
|
32 |
31
|
rexbidva |
|
33 |
32
|
3anbi3d |
|
34 |
3 33
|
bitrd |
|