Description: Absolute value of negative. (Contributed by NM, 2-Aug-1999)
Ref | Expression | ||
---|---|---|---|
Hypothesis | absvalsqi.1 | ⊢ 𝐴 ∈ ℂ | |
Assertion | absnegi | ⊢ ( abs ‘ - 𝐴 ) = ( abs ‘ 𝐴 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | absvalsqi.1 | ⊢ 𝐴 ∈ ℂ | |
2 | absneg | ⊢ ( 𝐴 ∈ ℂ → ( abs ‘ - 𝐴 ) = ( abs ‘ 𝐴 ) ) | |
3 | 1 2 | ax-mp | ⊢ ( abs ‘ - 𝐴 ) = ( abs ‘ 𝐴 ) |