Step |
Hyp |
Ref |
Expression |
1 |
|
djaval.h |
|
2 |
|
elex |
|
3 |
|
fveq2 |
|
4 |
3 1
|
eqtr4di |
|
5 |
|
fveq2 |
|
6 |
5
|
fveq1d |
|
7 |
6
|
pweqd |
|
8 |
|
fveq2 |
|
9 |
8
|
fveq1d |
|
10 |
9
|
fveq1d |
|
11 |
9
|
fveq1d |
|
12 |
10 11
|
ineq12d |
|
13 |
9 12
|
fveq12d |
|
14 |
7 7 13
|
mpoeq123dv |
|
15 |
4 14
|
mpteq12dv |
|
16 |
|
df-djaN |
|
17 |
15 16 1
|
mptfvmpt |
|
18 |
2 17
|
syl |
|