Theorem: List.remove_nil (Logic/Vorspiel/Vorspiel.lean)

State before:
α✝ : Type u
inst✝³ : DecidableEq α✝
β✝ : Type v
inst✝² : DecidableEq β✝
m : Type ?u.173581 → Type ?u.173583
α : Type u_1
β : Type ?u.173589
inst✝¹ : Monad m
inst✝ : DecidableEq α
a : α
⊢ remove a [] = []
Tactic:
simp [List.remove]
State after:
no goals