Description: Elementhood in the coelement equivalence relations class. (Contributed by Peter Mazsa, 24-Jul-2023)
Ref | Expression | ||
---|---|---|---|
Assertion | elcoeleqvrels |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | reseq2 | ||
2 | 1 | cosseqd | |
3 | 2 | eleq1d | |
4 | df-coeleqvrels | ||
5 | 3 4 | elab2g |