Step |
Hyp |
Ref |
Expression |
0 |
|
capply |
|
1 |
|
cbigcup |
|
2 |
1 1
|
ccom |
|
3 |
|
cvv |
|
4 |
3 3
|
cxp |
|
5 |
|
cep |
|
6 |
3 5
|
ctxp |
|
7 |
|
csingles |
|
8 |
5 7
|
cres |
|
9 |
8 3
|
ctxp |
|
10 |
6 9
|
csymdif |
|
11 |
10
|
crn |
|
12 |
4 11
|
cdif |
|
13 |
|
csingle |
|
14 |
|
cimg |
|
15 |
13 14
|
ccom |
|
16 |
|
cid |
|
17 |
16 13
|
cpprod |
|
18 |
15 17
|
ccom |
|
19 |
12 18
|
ccom |
|
20 |
2 19
|
ccom |
|
21 |
0 20
|
wceq |
|