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Theorem cast-law-neg-pos

⊦ 0 ≤ j ∧ 0 < i → cast(i, ~ j) = cast(i, ~ cast(i, j))

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 9
Used lemmas: cast-sub-2pot, cast-mult-neg-02, cast-mod-pos-low, cast-mod-pos-high,
Used spec theorems:
- Used simplifier rules: