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Theorem absa

⊦ r ≤ 0.r ∧ r0 ≤ 0.r → abs(r + r0) = abs(r) + abs(r0)

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by:
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 5
Used lemmas: abs-02, Abs-pos, abseq, Abs-neg, le-def,
Used spec theorems:
- Used simplifier rules: