Description: Real closure of absolute value. (Contributed by NM, 2-Aug-1999)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | absvalsqi.1 | ⊢ 𝐴 ∈ ℂ | |
| Assertion | abscli | ⊢ ( abs ‘ 𝐴 ) ∈ ℝ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | absvalsqi.1 | ⊢ 𝐴 ∈ ℂ | |
| 2 | abscl | ⊢ ( 𝐴 ∈ ℂ → ( abs ‘ 𝐴 ) ∈ ℝ ) | |
| 3 | 1 2 | ax-mp | ⊢ ( abs ‘ 𝐴 ) ∈ ℝ |