Description: The image of a set is a set. (Contributed by Glauco Siliprandi, 26-Jun-2021)
Ref | Expression | ||
---|---|---|---|
Hypothesis | imaexi.1 | |
|
Assertion | imaexi | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | imaexi.1 | |
|
2 | imaexg | |
|
3 | 1 2 | ax-mp | |