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Theorem absneg-01

⊦ abs(i) ≠ i → abs(i) = ~ i

Type: A user defined theorem
Validity: The proof is valid.
Features: ls,
Comment:
Used by: abs-21, absneg, absneg-02,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 2
Used lemmas: sub-sub-03, sub-zero, Minus-def, abs-08, le-def, abs-18, sub-eq,
Used spec theorems:
- Used simplifier rules:
  - int-basic2/add-c
  - int-basic2/add-a