law reverse_reverse_sym

bend-mathlib@0.8.1.0 · list.bend:2193

import Base

2193# Reversing twice gives the list back, reversed to rewrite toward the simple side.
2194law reverse_reverse_sym:
2195  for -a: Quant
2196  for -A: Kind(a)
2197  for xs: List<a, A>
2198  {xs == List.reverse(a, A, List.reverse(a, A, xs)) : List<a, A>}