Step |
Hyp |
Ref |
Expression |
1 |
|
eqid |
|
2 |
|
eqid |
|
3 |
1 2
|
ussval |
|
4 |
3
|
oveq1i |
|
5 |
|
fvex |
|
6 |
|
fvex |
|
7 |
6 6
|
xpex |
|
8 |
|
sqxpexg |
|
9 |
|
restco |
|
10 |
5 7 8 9
|
mp3an12i |
|
11 |
4 10
|
syl5eqr |
|
12 |
|
inxp |
|
13 |
|
incom |
|
14 |
|
eqid |
|
15 |
14 1
|
ressbas |
|
16 |
13 15
|
syl5eqr |
|
17 |
16
|
sqxpeqd |
|
18 |
12 17
|
syl5eq |
|
19 |
18
|
oveq2d |
|
20 |
14 2
|
ressunif |
|
21 |
20
|
oveq1d |
|
22 |
|
eqid |
|
23 |
|
eqid |
|
24 |
22 23
|
ussval |
|
25 |
24
|
a1i |
|
26 |
19 21 25
|
3eqtrd |
|
27 |
11 26
|
eqtr2d |
|