Step |
Hyp |
Ref |
Expression |
1 |
|
s1cl |
|
2 |
1
|
adantr |
|
3 |
|
s1cl |
|
4 |
3
|
adantl |
|
5 |
|
1z |
|
6 |
|
2z |
|
7 |
|
1lt2 |
|
8 |
|
fzolb |
|
9 |
5 6 7 8
|
mpbir3an |
|
10 |
|
s1len |
|
11 |
|
s1len |
|
12 |
10 11
|
oveq12i |
|
13 |
|
1p1e2 |
|
14 |
12 13
|
eqtri |
|
15 |
10 14
|
oveq12i |
|
16 |
9 15
|
eleqtrri |
|
17 |
16
|
a1i |
|
18 |
|
ccatval2 |
|
19 |
2 4 17 18
|
syl3anc |
|
20 |
10
|
oveq2i |
|
21 |
|
1m1e0 |
|
22 |
20 21
|
eqtri |
|
23 |
22
|
a1i |
|
24 |
23
|
fveq2d |
|
25 |
|
s1fv |
|
26 |
24 25
|
eqtrd |
|
27 |
26
|
adantl |
|
28 |
19 27
|
eqtrd |
|