Description: An integer is a complex number. (Contributed by NM, 9-May-2004)
Ref | Expression | ||
---|---|---|---|
Assertion | zcn | $${\u22a2}{N}\in \mathbb{Z}\to {N}\in \u2102$$ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | zre | $${\u22a2}{N}\in \mathbb{Z}\to {N}\in \mathbb{R}$$ | |
2 | 1 | recnd | $${\u22a2}{N}\in \mathbb{Z}\to {N}\in \u2102$$ |