Step |
Hyp |
Ref |
Expression |
1 |
|
esummulc2.a |
|
2 |
|
esummulc2.b |
|
3 |
|
esummulc2.c |
|
4 |
|
icossxr |
|
5 |
4 3
|
sseldi |
|
6 |
|
iccssxr |
|
7 |
2
|
ralrimiva |
|
8 |
|
nfcv |
|
9 |
8
|
esumcl |
|
10 |
1 7 9
|
syl2anc |
|
11 |
6 10
|
sseldi |
|
12 |
|
xmulcom |
|
13 |
5 11 12
|
syl2anc |
|
14 |
1 2 3
|
esummulc1 |
|
15 |
6 2
|
sseldi |
|
16 |
5
|
adantr |
|
17 |
|
xmulcom |
|
18 |
15 16 17
|
syl2anc |
|
19 |
18
|
esumeq2dv |
|
20 |
13 14 19
|
3eqtrd |
|