redefine star and derive concat #101
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awalterschulze
commented
Dec 6, 2024
| @@ -129,17 +136,17 @@ def derive_scalar {α: Type} {a: α} {s: Prop} {P: Lang α}: | |||
| rfl | |||
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| def derive_concat {α: Type} {a: α} {P Q: Lang α} {w: List α}: | |||
| (derive (concat P Q) a) w <-> (scalar (null P) (or (derive Q a) (concat (derive P a) Q))) w := by | |||
| (derive (concat P Q) a) w <-> (or (concat (derive P a) Q) (scalar (null P) (derive Q a))) w := by | |||
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scalar is used as a short cut for an if statement, so I think was incorrectly translated before
| -- sorry | ||
| -- case invFun => | ||
| -- sorry | ||
| def derive_star {α: Type} {a: α} {P: Lang α} {w: List α}: |
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There is no need for an if here
| -- sorry | ||
| -- case invFun => | ||
| -- sorry | ||
| def null_star {α: Type} {P: Lang α}: |
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I do not think we need List here
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