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Theorem cast-law-neg

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-sub-one-01,
Used by units in proved state: byte,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 7
Proof steps: 10
Used lemmas: cast-zero, cast-mult-2pot, cast-mult-neg-01, cast-add-2pot-01, cast-add-2pot, cast-mult-add, cast-mult-neg-02, cast-law-neg-pos,
Used spec theorems:
- int-div/modex
Used simplifier rules: