Metamath Proof Explorer


Theorem rprege0

Description: A positive real is a nonnegative real number. (Contributed by Mario Carneiro, 31-Jan-2014)

Ref Expression
Assertion rprege0 ⊢ A ∈ ℝ + → A ∈ ℝ ∧ 0 ≤ A

Proof

Step Hyp Ref Expression
1 rpre ⊢ A ∈ ℝ + → A ∈ ℝ
2 rpge0 ⊢ A ∈ ℝ + → 0 ≤ A
3 1 2 jca ⊢ A ∈ ℝ + → A ∈ ℝ ∧ 0 ≤ A