Step |
Hyp |
Ref |
Expression |
1 |
|
sqrlem1.1 |
|
2 |
|
sqrlem1.2 |
|
3 |
|
sqrlem5.3 |
|
4 |
1
|
ssrab3 |
|
5 |
4
|
sseli |
|
6 |
5
|
rpge0d |
|
7 |
6
|
rgen |
|
8 |
1 2
|
sqrlem3 |
|
9 |
|
pm4.24 |
|
10 |
9
|
3anbi1i |
|
11 |
3 10
|
supmullem2 |
|
12 |
7 8 8 11
|
mp3an2i |
|
13 |
1 2
|
sqrlem4 |
|
14 |
|
rpre |
|
15 |
14
|
adantr |
|
16 |
13 15
|
syl |
|
17 |
16
|
recnd |
|
18 |
17
|
sqvald |
|
19 |
2 2
|
oveq12i |
|
20 |
3 10
|
supmul |
|
21 |
7 8 8 20
|
mp3an2i |
|
22 |
19 21
|
syl5eq |
|
23 |
18 22
|
eqtrd |
|
24 |
12 23
|
jca |
|