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Metamath Proof Explorer
Theorem 2rp
Description: 2 is a positive real. (Contributed by Mario Carneiro, 28-May-2016)
|
|
Ref |
Expression |
|
Assertion |
2rp |
|- 2 e. RR+ |
Proof
| Step |
Hyp |
Ref |
Expression |
| 1 |
|
2re |
|- 2 e. RR |
| 2 |
|
2pos |
|- 0 < 2 |
| 3 |
1 2
|
elrpii |
|- 2 e. RR+ |