Step |
Hyp |
Ref |
Expression |
1 |
|
rngcco.c |
|
2 |
|
rngcco.u |
|
3 |
|
rngcco.o |
|
4 |
|
eqid |
|
5 |
1 4 2
|
rngcbas |
|
6 |
|
eqid |
|
7 |
1 4 2 6
|
rngchomfval |
|
8 |
1 2 5 7
|
rngcval |
|
9 |
8
|
fveq2d |
|
10 |
3
|
a1i |
|
11 |
|
eqid |
|
12 |
|
eqid |
|
13 |
|
fvexd |
|
14 |
5 7
|
rnghmresfn |
|
15 |
|
inss1 |
|
16 |
15
|
a1i |
|
17 |
|
eqid |
|
18 |
17 2
|
estrcbas |
|
19 |
18
|
eqcomd |
|
20 |
16 5 19
|
3sstr4d |
|
21 |
|
eqid |
|
22 |
11 12 13 14 20 21
|
rescco |
|
23 |
9 10 22
|
3eqtr4d |
|