Step |
Hyp |
Ref |
Expression |
1 |
|
gpg3kgrtriex.n |
|
2 |
|
3z |
|
3 |
2
|
a1i |
|
4 |
|
nnz |
|
5 |
3 4
|
zmulcld |
|
6 |
|
3t1e3 |
|
7 |
|
nnge1 |
|
8 |
|
1re |
|
9 |
|
nnre |
|
10 |
|
3re |
|
11 |
|
3pos |
|
12 |
10 11
|
pm3.2i |
|
13 |
12
|
a1i |
|
14 |
|
lemul2 |
|
15 |
8 9 13 14
|
mp3an2i |
|
16 |
7 15
|
mpbid |
|
17 |
6 16
|
eqbrtrrid |
|
18 |
|
eluz2 |
|
19 |
3 5 17 18
|
syl3anbrc |
|
20 |
1 19
|
eqeltrid |
|