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Theorem mkDecimal-scale-not-neg

⊦ mkDecimal(i, j) = mkDecimal(i, abs(j))

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: mkDecimal-enlarge, mkDecimal-selectors,
Used by units in proved state: decimal-simple-ops,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 9
Proof steps: 16
Used lemmas: scale-base, scale-zero, scale-rec, intvalue-rec, intvalue-base, Equality,
Used spec theorems:
- Used simplifier rules:
  - int-abs/abs-07
  - int-abs/abs-01