Step |
Hyp |
Ref |
Expression |
1 |
|
invisoinv.b |
|
2 |
|
invisoinv.i |
|
3 |
|
invisoinv.n |
|
4 |
|
invisoinv.c |
|
5 |
|
invisoinv.x |
|
6 |
|
invisoinv.y |
|
7 |
|
invisoinv.f |
|
8 |
|
eqid |
|
9 |
|
eqid |
|
10 |
1 9 4 6
|
idiso |
|
11 |
2
|
a1i |
|
12 |
11
|
oveqd |
|
13 |
10 12
|
eleqtrrd |
|
14 |
1 3 4 5 6 2 7 8 6 13
|
invco |
|
15 |
|
eqid |
|
16 |
1 15 2 4 5 6
|
isohom |
|
17 |
16 7
|
sseldd |
|
18 |
1 15 9 4 5 8 6 17
|
catlid |
|
19 |
3
|
a1i |
|
20 |
19
|
oveqd |
|
21 |
20
|
fveq1d |
|
22 |
1 9 4 6
|
idinv |
|
23 |
21 22
|
eqtrd |
|
24 |
23
|
oveq2d |
|
25 |
1 15 2 4 6 5
|
isohom |
|
26 |
1 3 4 5 6 2
|
invf |
|
27 |
26 7
|
ffvelrnd |
|
28 |
25 27
|
sseldd |
|
29 |
1 15 9 4 6 8 5 28
|
catrid |
|
30 |
24 29
|
eqtrd |
|
31 |
14 18 30
|
3brtr3d |
|
32 |
1 3 4 6 5
|
invsym |
|
33 |
31 32
|
mpbird |
|