Step |
Hyp |
Ref |
Expression |
1 |
|
dmoprab |
|
2 |
|
df-scut |
|
3 |
|
df-mpo |
|
4 |
2 3
|
eqtri |
|
5 |
4
|
dmeqi |
|
6 |
|
df-sslt |
|
7 |
6
|
relopabi |
|
8 |
|
19.42v |
|
9 |
|
ssltss1 |
|
10 |
|
velpw |
|
11 |
9 10
|
sylibr |
|
12 |
11
|
pm4.71ri |
|
13 |
|
vex |
|
14 |
|
vex |
|
15 |
13 14
|
elimasn |
|
16 |
|
df-br |
|
17 |
15 16
|
bitr4i |
|
18 |
17
|
anbi2i |
|
19 |
|
riotaex |
|
20 |
19
|
isseti |
|
21 |
20
|
biantru |
|
22 |
12 18 21
|
3bitr2i |
|
23 |
8 22 16
|
3bitr2ri |
|
24 |
23
|
a1i |
|
25 |
7 24
|
opabbi2dv |
|
26 |
25
|
mptru |
|
27 |
1 5 26
|
3eqtr4i |
|