Step |
Hyp |
Ref |
Expression |
1 |
|
sge0fsummptf.k |
|
2 |
|
sge0fsummptf.a |
|
3 |
|
sge0fsummptf.b |
|
4 |
|
eqid |
|
5 |
1 3 4
|
fmptdf |
|
6 |
2 5
|
sge0fsum |
|
7 |
|
fveq2 |
|
8 |
|
nfcv |
|
9 |
|
nfcv |
|
10 |
|
nfmpt1 |
|
11 |
|
nfcv |
|
12 |
10 11
|
nffv |
|
13 |
|
nfcv |
|
14 |
7 8 9 12 13
|
cbvsum |
|
15 |
14
|
a1i |
|
16 |
|
simpr |
|
17 |
4
|
fvmpt2 |
|
18 |
16 3 17
|
syl2anc |
|
19 |
18
|
ex |
|
20 |
1 19
|
ralrimi |
|
21 |
20
|
sumeq2d |
|
22 |
6 15 21
|
3eqtrd |
|