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Theorem div2-odd-01

⊦ i < 0 → (1 - i * 2) / 2 = ~ i

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: div2-neg-odd,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 3
Proof steps: 4
Used lemmas: one, div-mult-num-01, neg-01, mod-two-02, mod-neg-01, div2-odd,
Used spec theorems:
- Used simplifier rules: