List.map_take: law of bend-mathlib@0.8.1.0
Import: import bend-mathlib@0.8.1.0/list.bend as List
Lines 1184-1191 of bend-mathlib@0.8.1.0/list.bend: https://jend.leeeet.dev/read.txt?path=bend-mathlib@0.8.1.0/list.bend&start_line=1184&end_line=1191

import Base

# Mapping commutes with taking: map f (take n xs) = take n (map f xs).
law map_take:
  for ~A: Type
  for ~B: Type
  for ~f: A -> B
  for xs: List<A>
  for n: Nat
  {List.map(~A, ~B, ~f, List.take(&1, A, xs, n)) == List.take(&1, B, List.map(~A, ~B, ~f, xs), n) : List<B>}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.map
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.take
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat