List.take_succ: law of bend-mathlib@0.8.1.0
Import: import bend-mathlib@0.8.1.0/list.bend as List
Lines 2102-2109 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=2102&end_line=2109

import Base

# Taking n + 1 elements of a cons keeps its head and takes n from its tail.
law take_succ:
  for -a: Quant
  for -A: Kind(a)
  for -x: A
  for -xs: List<a, A>
  for -n: Nat
  {List.take(a, A, x <> xs, 1n+n) == x <> List.take(a, A, xs, n) : List<a, A>}

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  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