Step |
Hyp |
Ref |
Expression |
1 |
|
resum2sqcl.q |
|
2 |
1
|
resum2sqgt0 |
|
3 |
2
|
ex |
|
4 |
3
|
expcom |
|
5 |
4
|
com23 |
|
6 |
|
eqid |
|
7 |
6
|
resum2sqgt0 |
|
8 |
1
|
breq2i |
|
9 |
|
resqcl |
|
10 |
9
|
adantl |
|
11 |
10
|
recnd |
|
12 |
|
resqcl |
|
13 |
12
|
ad2antrr |
|
14 |
13
|
recnd |
|
15 |
11 14
|
addcomd |
|
16 |
15
|
breq2d |
|
17 |
8 16
|
syl5bb |
|
18 |
7 17
|
mpbird |
|
19 |
18
|
ex |
|
20 |
19
|
expcom |
|
21 |
5 20
|
jaoi |
|
22 |
21
|
3imp31 |
|