law reverse_append

bend-mathlib@0.8.1.0 · list.bend:94

import Base

94# Reversing an append reverses and swaps the parts: reverse (xs ++ ys) = reverse ys ++ reverse xs.
95law reverse_append:
96  for -a: Quant
97  for -A: Kind(a)
98  for xs: List<a, A>
99  for ys: List<a, A>
100  {List.reverse(a, A, List.append(a, A, xs, ys)) == List.append(a, A, List.reverse(a, A, ys), List.reverse(a, A, xs)) : List<a, A>}