| Step |
Hyp |
Ref |
Expression |
| 1 |
|
dvaset.h |
|
| 2 |
|
dvaset.t |
|
| 3 |
|
dvaset.e |
|
| 4 |
|
dvaset.d |
|
| 5 |
|
dvaset.u |
|
| 6 |
1
|
dvafset |
|
| 7 |
6
|
fveq1d |
|
| 8 |
|
fveq2 |
|
| 9 |
8 2
|
eqtr4di |
|
| 10 |
9
|
opeq2d |
|
| 11 |
|
eqidd |
|
| 12 |
9 9 11
|
mpoeq123dv |
|
| 13 |
12
|
opeq2d |
|
| 14 |
|
fveq2 |
|
| 15 |
14 4
|
eqtr4di |
|
| 16 |
15
|
opeq2d |
|
| 17 |
10 13 16
|
tpeq123d |
|
| 18 |
|
fveq2 |
|
| 19 |
18 3
|
eqtr4di |
|
| 20 |
|
eqidd |
|
| 21 |
19 9 20
|
mpoeq123dv |
|
| 22 |
21
|
opeq2d |
|
| 23 |
22
|
sneqd |
|
| 24 |
17 23
|
uneq12d |
|
| 25 |
|
eqid |
|
| 26 |
|
tpex |
|
| 27 |
|
snex |
|
| 28 |
26 27
|
unex |
|
| 29 |
24 25 28
|
fvmpt |
|
| 30 |
7 29
|
sylan9eq |
|
| 31 |
5 30
|
eqtrid |
|