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Theorem abs-09

⊦ 0 < i → abs(i - 1) = abs(i) - 1

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: absls-04, absls-05,
Used by units in proved state: int-mult, intnat,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 1
Used lemmas: lels-03, lsone, le-def, sub-le-01, abs-18, abs-16,
Used spec theorems:
- Used simplifier rules:
  - int-basic2/add-c
  - int-basic2/add-a