Set.fintypeInsertOfNotMem

{α : Type u} → {a : α} → (s : Set α) → [Fintype ↑s] → a ∉ s → Fintype ↑(insert a s)

A Fintype structure on insert a s when inserting a new element.

Defined in: Mathlib.Data.Set.Finite.Basic
Cited by: 1 results in Mathlib
Foundations: Depth 61 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: Fintype

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