Step |
Hyp |
Ref |
Expression |
1 |
|
fucbas.q |
|
2 |
|
fuchom.n |
|
3 |
|
eqid |
|
4 |
|
eqid |
|
5 |
|
eqid |
|
6 |
|
simpl |
|
7 |
|
simpr |
|
8 |
|
eqid |
|
9 |
1 3 2 4 5 6 7 8
|
fuccofval |
|
10 |
1 3 2 4 5 6 7 9
|
fucval |
|
11 |
|
catstr |
|
12 |
|
homid |
|
13 |
|
snsstp2 |
|
14 |
2
|
ovexi |
|
15 |
14
|
a1i |
|
16 |
|
eqid |
|
17 |
10 11 12 13 15 16
|
strfv3 |
|
18 |
17
|
eqcomd |
|
19 |
12
|
str0 |
|
20 |
2
|
natffn |
|
21 |
|
funcrcl |
|
22 |
21
|
con3i |
|
23 |
22
|
eq0rdv |
|
24 |
23
|
xpeq2d |
|
25 |
|
xp0 |
|
26 |
24 25
|
eqtrdi |
|
27 |
26
|
fneq2d |
|
28 |
20 27
|
mpbii |
|
29 |
|
fn0 |
|
30 |
28 29
|
sylib |
|
31 |
|
fnfuc |
|
32 |
31
|
fndmi |
|
33 |
32
|
ndmov |
|
34 |
1 33
|
syl5eq |
|
35 |
34
|
fveq2d |
|
36 |
19 30 35
|
3eqtr4a |
|
37 |
18 36
|
pm2.61i |
|