This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.
Description: A positive real is a complex number. (Contributed by NM, 11-Nov-2008)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | rpcn |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rpre | ||
| 2 | 1 | recnd |