This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.
Description: A positive real is a nonnegative real number. (Contributed by Mario Carneiro, 31-Jan-2014)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | rprege0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rpre | ||
| 2 | rpge0 | ||
| 3 | 1 2 | jca |