| Step |
Hyp |
Ref |
Expression |
| 1 |
|
dochval.b |
|
| 2 |
|
dochval.g |
|
| 3 |
|
dochval.o |
|
| 4 |
|
dochval.h |
|
| 5 |
|
elex |
|
| 6 |
|
fveq2 |
|
| 7 |
6 4
|
eqtr4di |
|
| 8 |
|
fveq2 |
|
| 9 |
8
|
fveq1d |
|
| 10 |
9
|
fveq2d |
|
| 11 |
10
|
pweqd |
|
| 12 |
|
fveq2 |
|
| 13 |
12
|
fveq1d |
|
| 14 |
|
fveq2 |
|
| 15 |
14 3
|
eqtr4di |
|
| 16 |
|
fveq2 |
|
| 17 |
16 2
|
eqtr4di |
|
| 18 |
|
fveq2 |
|
| 19 |
18 1
|
eqtr4di |
|
| 20 |
13
|
fveq1d |
|
| 21 |
20
|
sseq2d |
|
| 22 |
19 21
|
rabeqbidv |
|
| 23 |
17 22
|
fveq12d |
|
| 24 |
15 23
|
fveq12d |
|
| 25 |
13 24
|
fveq12d |
|
| 26 |
11 25
|
mpteq12dv |
|
| 27 |
7 26
|
mpteq12dv |
|
| 28 |
|
df-doch |
|
| 29 |
27 28 4
|
mptfvmpt |
|
| 30 |
5 29
|
syl |
|