This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.
Description: A member of an upper set of integers is a complex number. (Contributed by Glauco Siliprandi, 29-Jun-2017)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | eluzelcn |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eluzelre | ||
| 2 | 1 | recnd |