Description: A positive real is greater than or equal to zero. (Contributed by Mario Carneiro, 28-May-2016)
Ref | Expression | ||
---|---|---|---|
Hypothesis | rpred.1 | ⊢ ( 𝜑 → 𝐴 ∈ ℝ+ ) | |
Assertion | rpge0d | ⊢ ( 𝜑 → 0 ≤ 𝐴 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rpred.1 | ⊢ ( 𝜑 → 𝐴 ∈ ℝ+ ) | |
2 | rpge0 | ⊢ ( 𝐴 ∈ ℝ+ → 0 ≤ 𝐴 ) | |
3 | 1 2 | syl | ⊢ ( 𝜑 → 0 ≤ 𝐴 ) |