import Mathlib.Data.Finset.Basic /-! # Common.Finset Additional theorems and definitions useful in the context of `Finset`s. -/ namespace Finset /-- An alternative `Finset.range` function that returns `Fin` indices instead of `ℕ` indices. -/ def finRange (n : ℕ) : Finset (Fin n) := ⟨sorry, sorry⟩ end Finset