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 |
|