Step |
Hyp |
Ref |
Expression |
1 |
|
sseq1 |
|
2 |
|
fveq2 |
|
3 |
2
|
fveq1d |
|
4 |
3
|
oveq1d |
|
5 |
4
|
fveq2d |
|
6 |
5
|
oveq1d |
|
7 |
3
|
fveq2d |
|
8 |
7
|
oveq1d |
|
9 |
8
|
oveq1d |
|
10 |
6 9
|
eqeq12d |
|
11 |
1 10
|
imbi12d |
|
12 |
|
fveq2 |
|
13 |
12
|
sseq2d |
|
14 |
|
fveq2 |
|
15 |
14
|
fveq1d |
|
16 |
15
|
oveq2d |
|
17 |
16
|
fveq2d |
|
18 |
17
|
oveq1d |
|
19 |
15
|
fveq2d |
|
20 |
19
|
oveq1d |
|
21 |
20
|
oveq2d |
|
22 |
18 21
|
eqeq12d |
|
23 |
13 22
|
imbi12d |
|
24 |
|
fveq2 |
|
25 |
|
fveq2 |
|
26 |
24 25
|
oveq12d |
|
27 |
26
|
fveq2d |
|
28 |
27
|
oveq1d |
|
29 |
24
|
fveq2d |
|
30 |
29
|
oveq1d |
|
31 |
25
|
fveq2d |
|
32 |
31
|
oveq1d |
|
33 |
30 32
|
oveq12d |
|
34 |
28 33
|
eqeq12d |
|
35 |
34
|
imbi2d |
|
36 |
|
ifchhv |
|
37 |
|
ifchhv |
|
38 |
|
ifhvhv0 |
|
39 |
36 37 38
|
pjopythi |
|
40 |
11 23 35 39
|
dedth3h |
|