| Step |
Hyp |
Ref |
Expression |
| 1 |
|
ishst |
|
| 2 |
1
|
simp3bi |
|
| 3 |
2
|
ad2antrr |
|
| 4 |
|
sseq1 |
|
| 5 |
|
fveq2 |
|
| 6 |
5
|
oveq1d |
|
| 7 |
6
|
eqeq1d |
|
| 8 |
|
fvoveq1 |
|
| 9 |
5
|
oveq1d |
|
| 10 |
8 9
|
eqeq12d |
|
| 11 |
7 10
|
anbi12d |
|
| 12 |
4 11
|
imbi12d |
|
| 13 |
|
fveq2 |
|
| 14 |
13
|
sseq2d |
|
| 15 |
|
fveq2 |
|
| 16 |
15
|
oveq2d |
|
| 17 |
16
|
eqeq1d |
|
| 18 |
|
oveq2 |
|
| 19 |
18
|
fveq2d |
|
| 20 |
15
|
oveq2d |
|
| 21 |
19 20
|
eqeq12d |
|
| 22 |
17 21
|
anbi12d |
|
| 23 |
14 22
|
imbi12d |
|
| 24 |
12 23
|
rspc2v |
|
| 25 |
24
|
com23 |
|
| 26 |
25
|
impr |
|
| 27 |
26
|
adantll |
|
| 28 |
3 27
|
mpd |
|