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Theorem abseq

⊦ abs(r) + r = 0.r ↔ r ≤ 0.r

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: abs-neg, absa, absneg-01,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 3
Used lemmas: Abs-pos, Abs-neg, le-def, abs-16,
Used spec theorems:
- Used simplifier rules: