Description: Elementhood in the class of functions. (Contributed by Peter Mazsa, 31-Aug-2021)
Ref | Expression | ||
---|---|---|---|
Assertion | elfunsALTV2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfunsALTV | ||
2 | cosselcnvrefrels2 | ||
3 | cosselrels | ||
4 | 3 | biantrud | |
5 | 2 4 | bitr4id | |
6 | 5 | pm5.32ri | |
7 | 1 6 | bitri |