law drop_nil_sym

bend-mathlib@0.8.1.0 · list.bend:2304

import Base

2304# Dropping from the empty list gives the empty list, reversed to rewrite toward the simple side.
2305law drop_nil_sym:
2306  for -a: Quant
2307  for -A: Kind(a)
2308  for -n: Nat
2309  {Nil{} == List.drop(a, A, Nil{}, n) : List<a, A>}