Step |
Hyp |
Ref |
Expression |
1 |
|
opprbas.1 |
|
2 |
|
ringrng |
|
3 |
1
|
opprrng |
|
4 |
2 3
|
syl |
|
5 |
|
oveq1 |
|
6 |
5
|
eqeq1d |
|
7 |
6
|
ovanraleqv |
|
8 |
|
eqid |
|
9 |
|
eqid |
|
10 |
8 9
|
ringidcl |
|
11 |
|
eqid |
|
12 |
|
eqid |
|
13 |
8 11 1 12
|
opprmul |
|
14 |
8 11 9
|
ringridm |
|
15 |
13 14
|
eqtrid |
|
16 |
8 11 1 12
|
opprmul |
|
17 |
8 11 9
|
ringlidm |
|
18 |
16 17
|
eqtrid |
|
19 |
15 18
|
jca |
|
20 |
19
|
ralrimiva |
|
21 |
7 10 20
|
rspcedvdw |
|
22 |
1 8
|
opprbas |
|
23 |
22 12
|
isringrng |
|
24 |
4 21 23
|
sylanbrc |
|