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Theorem dec2int-not-neg

⊦ mkDecimal(0, 0) ≤ dec → ¬ dec2int(dec) < 0

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 3
Proof steps: 5
Used lemmas: le-pos,
Used spec theorems:
- decimal/dec2int-def
- int-div/div-zero-nls
Used simplifier rules: