| Step |
Hyp |
Ref |
Expression |
| 1 |
|
isvclem.1 |
|
| 2 |
|
df-vc |
|
| 3 |
2
|
eleq2i |
|
| 4 |
|
eleq1 |
|
| 5 |
|
rneq |
|
| 6 |
5 1
|
eqtr4di |
|
| 7 |
|
xpeq2 |
|
| 8 |
7
|
feq2d |
|
| 9 |
|
feq3 |
|
| 10 |
8 9
|
bitrd |
|
| 11 |
6 10
|
syl |
|
| 12 |
|
oveq |
|
| 13 |
12
|
oveq2d |
|
| 14 |
|
oveq |
|
| 15 |
13 14
|
eqeq12d |
|
| 16 |
6 15
|
raleqbidv |
|
| 17 |
|
oveq |
|
| 18 |
17
|
eqeq2d |
|
| 19 |
18
|
anbi1d |
|
| 20 |
19
|
ralbidv |
|
| 21 |
16 20
|
anbi12d |
|
| 22 |
21
|
ralbidv |
|
| 23 |
22
|
anbi2d |
|
| 24 |
6 23
|
raleqbidv |
|
| 25 |
4 11 24
|
3anbi123d |
|
| 26 |
|
feq1 |
|
| 27 |
|
oveq |
|
| 28 |
27
|
eqeq1d |
|
| 29 |
|
oveq |
|
| 30 |
|
oveq |
|
| 31 |
|
oveq |
|
| 32 |
30 31
|
oveq12d |
|
| 33 |
29 32
|
eqeq12d |
|
| 34 |
33
|
ralbidv |
|
| 35 |
|
oveq |
|
| 36 |
|
oveq |
|
| 37 |
30 36
|
oveq12d |
|
| 38 |
35 37
|
eqeq12d |
|
| 39 |
|
oveq |
|
| 40 |
|
oveq |
|
| 41 |
36
|
oveq2d |
|
| 42 |
40 41
|
eqtrd |
|
| 43 |
39 42
|
eqeq12d |
|
| 44 |
38 43
|
anbi12d |
|
| 45 |
44
|
ralbidv |
|
| 46 |
34 45
|
anbi12d |
|
| 47 |
46
|
ralbidv |
|
| 48 |
28 47
|
anbi12d |
|
| 49 |
48
|
ralbidv |
|
| 50 |
26 49
|
3anbi23d |
|
| 51 |
25 50
|
opelopabg |
|
| 52 |
3 51
|
bitrid |
|