Description: Version of frnnn0supp avoiding ax-rep by assuming F is a set rather than its domain I . (Contributed by SN, 5-Aug-2024)
Ref | Expression | ||
---|---|---|---|
Assertion | frnnn0suppg |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c0ex | ||
2 | frnsuppeqg | ||
3 | 1 2 | mpan2 | |
4 | 3 | imp | |
5 | dfn2 | ||
6 | 5 | imaeq2i | |
7 | 4 6 | eqtr4di |