Step |
Hyp |
Ref |
Expression |
1 |
|
sn-ltmul2d.a |
|
2 |
|
sn-ltmul2d.b |
|
3 |
|
sn-ltmul2d.c |
|
4 |
|
sn-ltmul2d.1 |
|
5 |
|
rersubcl |
|
6 |
2 1 5
|
syl2anc |
|
7 |
3 6 4
|
mulgt0b2d |
|
8 |
|
resubdi |
|
9 |
3 2 1 8
|
syl3anc |
|
10 |
9
|
breq2d |
|
11 |
7 10
|
bitr2d |
|
12 |
3 1
|
remulcld |
|
13 |
3 2
|
remulcld |
|
14 |
|
reposdif |
|
15 |
12 13 14
|
syl2anc |
|
16 |
|
reposdif |
|
17 |
1 2 16
|
syl2anc |
|
18 |
11 15 17
|
3bitr4d |
|