Step |
Hyp |
Ref |
Expression |
1 |
|
fcobij.1 |
|
2 |
|
fcobij.2 |
|
3 |
|
fcobij.3 |
|
4 |
|
fcobij.4 |
|
5 |
|
fcobijfs.5 |
|
6 |
|
fcobijfs.6 |
|
7 |
|
fcobijfs.7 |
|
8 |
|
fcobijfs.8 |
|
9 |
|
breq1 |
|
10 |
9
|
cbvrabv |
|
11 |
7 10
|
eqtr4i |
|
12 |
|
f1oi |
|
13 |
12
|
a1i |
|
14 |
11 8 6 13 1 2 3 2 4 5
|
mapfien |
|
15 |
7
|
ssrab3 |
|
16 |
15
|
sseli |
|
17 |
|
coass |
|
18 |
|
f1of |
|
19 |
1 18
|
syl |
|
20 |
|
elmapi |
|
21 |
|
fco |
|
22 |
19 20 21
|
syl2an |
|
23 |
|
fcoi1 |
|
24 |
22 23
|
syl |
|
25 |
17 24
|
eqtr3id |
|
26 |
16 25
|
sylan2 |
|
27 |
26
|
mpteq2dva |
|
28 |
27
|
f1oeq1d |
|
29 |
14 28
|
mpbid |
|