Step |
Hyp |
Ref |
Expression |
1 |
|
pridlval.1 |
|
2 |
|
pridlval.2 |
|
3 |
|
pridlval.3 |
|
4 |
|
fveq2 |
|
5 |
|
fveq2 |
|
6 |
5 1
|
eqtr4di |
|
7 |
6
|
rneqd |
|
8 |
7 3
|
eqtr4di |
|
9 |
8
|
neeq2d |
|
10 |
|
fveq2 |
|
11 |
10 2
|
eqtr4di |
|
12 |
11
|
oveqd |
|
13 |
12
|
eleq1d |
|
14 |
13
|
2ralbidv |
|
15 |
14
|
imbi1d |
|
16 |
4 15
|
raleqbidv |
|
17 |
4 16
|
raleqbidv |
|
18 |
9 17
|
anbi12d |
|
19 |
4 18
|
rabeqbidv |
|
20 |
|
df-pridl |
|
21 |
|
fvex |
|
22 |
21
|
rabex |
|
23 |
19 20 22
|
fvmpt |
|