Step |
Hyp |
Ref |
Expression |
1 |
|
resvbas.1 |
|
2 |
|
resv1r.2 |
|
3 |
|
eqid |
|
4 |
1 3
|
resvbas |
|
5 |
4
|
eleq2d |
|
6 |
|
eqid |
|
7 |
1 6
|
resvmulr |
|
8 |
7
|
oveqd |
|
9 |
8
|
eqeq1d |
|
10 |
7
|
oveqd |
|
11 |
10
|
eqeq1d |
|
12 |
9 11
|
anbi12d |
|
13 |
4 12
|
raleqbidv |
|
14 |
5 13
|
anbi12d |
|
15 |
14
|
iotabidv |
|
16 |
3 6 2
|
dfur2 |
|
17 |
|
eqid |
|
18 |
|
eqid |
|
19 |
|
eqid |
|
20 |
17 18 19
|
dfur2 |
|
21 |
15 16 20
|
3eqtr4g |
|