Description: Condition for a restricted converse epsilon coset of a set to be the set itself. (Contributed by Peter Mazsa, 11-May-2021)
Ref | Expression | ||
---|---|---|---|
Assertion | eccnvepres3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | resdmres | ||
2 | 1 | eceq2i | |
3 | eccnvepres2 | ||
4 | 2 3 | eqtr3id |