Step |
Hyp |
Ref |
Expression |
1 |
|
s2rn.i |
|
2 |
|
s2rn.j |
|
3 |
|
imadmrn |
|
4 |
1 2
|
s2cld |
|
5 |
|
wrdfn |
|
6 |
|
s2len |
|
7 |
6
|
oveq2i |
|
8 |
|
fzo0to2pr |
|
9 |
7 8
|
eqtri |
|
10 |
9
|
fneq2i |
|
11 |
10
|
biimpi |
|
12 |
4 5 11
|
3syl |
|
13 |
12
|
fndmd |
|
14 |
13
|
imaeq2d |
|
15 |
|
c0ex |
|
16 |
15
|
prid1 |
|
17 |
16
|
a1i |
|
18 |
|
1ex |
|
19 |
18
|
prid2 |
|
20 |
19
|
a1i |
|
21 |
|
fnimapr |
|
22 |
12 17 20 21
|
syl3anc |
|
23 |
|
s2fv0 |
|
24 |
1 23
|
syl |
|
25 |
|
s2fv1 |
|
26 |
2 25
|
syl |
|
27 |
24 26
|
preq12d |
|
28 |
14 22 27
|
3eqtrd |
|
29 |
3 28
|
syl5eqr |
|