Step |
Hyp |
Ref |
Expression |
1 |
|
cats1cld.1 |
|
2 |
|
cats1cli.2 |
|
3 |
|
cats1fvn.3 |
|
4 |
3
|
oveq2i |
|
5 |
|
lencl |
|
6 |
2 5
|
ax-mp |
|
7 |
3 6
|
eqeltrri |
|
8 |
7
|
nn0cni |
|
9 |
8
|
addid2i |
|
10 |
4 9
|
eqtr2i |
|
11 |
1 10
|
fveq12i |
|
12 |
|
s1cli |
|
13 |
|
s1len |
|
14 |
|
1nn |
|
15 |
13 14
|
eqeltri |
|
16 |
|
lbfzo0 |
|
17 |
15 16
|
mpbir |
|
18 |
|
ccatval3 |
|
19 |
2 12 17 18
|
mp3an |
|
20 |
11 19
|
eqtri |
|
21 |
|
s1fv |
|
22 |
20 21
|
syl5eq |
|