This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.
Metamath Proof Explorer
Theorem 3rp
Description: 3 is a positive real. (Contributed by Glauco Siliprandi, 11-Dec-2019)
|
|
Ref |
Expression |
|
Assertion |
3rp |
|- 3 e. RR+ |
Proof
| Step |
Hyp |
Ref |
Expression |
| 1 |
|
3re |
|- 3 e. RR |
| 2 |
|
3pos |
|- 0 < 3 |
| 3 |
1 2
|
elrpii |
|- 3 e. RR+ |