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Theorem getint-neg-02

⊦ mkDecimal(i, j).int < 0 ↔ i < 0

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 5
Proof steps: 9
Used lemmas: getint-pos-01, intvalue-zero, intvalue-base, mkDecimal-rec,
Used spec theorems:
- int-div/mod-zero-05
Used simplifier rules: