Step |
Hyp |
Ref |
Expression |
1 |
|
ajval.1 |
|
2 |
|
ajval.2 |
|
3 |
|
ajval.3 |
|
4 |
|
ajval.4 |
|
5 |
|
ajval.5 |
|
6 |
|
phnv |
|
7 |
1 2 3 4 5
|
ajfval |
|
8 |
6 7
|
sylan |
|
9 |
8
|
fveq1d |
|
10 |
9
|
3adant3 |
|
11 |
1
|
fvexi |
|
12 |
|
fex |
|
13 |
11 12
|
mpan2 |
|
14 |
|
eqid |
|
15 |
|
feq1 |
|
16 |
|
fveq1 |
|
17 |
16
|
oveq1d |
|
18 |
17
|
eqeq1d |
|
19 |
18
|
2ralbidv |
|
20 |
15 19
|
3anbi13d |
|
21 |
14 20
|
fvopab5 |
|
22 |
13 21
|
syl |
|
23 |
|
3anass |
|
24 |
23
|
baib |
|
25 |
24
|
iotabidv |
|
26 |
22 25
|
eqtrd |
|
27 |
26
|
3ad2ant3 |
|
28 |
10 27
|
eqtrd |
|