FinEnum.insertNone

(α : Type u) → [inst : FinEnum α] → Fin (FinEnum.card α + 1) → FinEnum (Option α)

Inserting an Option.none anywhere in an enumeration yields another enumeration.

Defined in: Mathlib.Data.FinEnum.Option
Cited by: 3 results in Mathlib
Foundations: Depth 58 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: FinEnum

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