Metamath Proof Explorer
Description: Define the subset class. For the value, see brsset . (Contributed by Scott Fenton, 31-Mar-2012)
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|
Ref |
Expression |
|
Assertion |
df-sset |
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Detailed syntax breakdown
Step |
Hyp |
Ref |
Expression |
0 |
|
csset |
|
1 |
|
cvv |
|
2 |
1 1
|
cxp |
|
3 |
|
cep |
|
4 |
1 3
|
cdif |
|
5 |
3 4
|
ctxp |
|
6 |
5
|
crn |
|
7 |
2 6
|
cdif |
|
8 |
0 7
|
wceq |
|