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Theorem div-one-one-neg

⊦ i | ~1 ↔ i = 1 ∨ i = ~1

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: div-one-neg-pos,
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: divides-mone, div-one, divides,
Used spec theorems:
- int-abs/Abs-neg
Used simplifier rules: