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 |
|