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 ) ) |
| 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 ) ) |