law length_reverse_sym

bend-mathlib@0.8.1.0 · list.bend:2203

import Base

2203# Reversing preserves the length, reversed to rewrite toward the simple side.
2204law length_reverse_sym:
2205  for -a: Quant
2206  for -A: Kind(a)
2207  for xs: List<a, A>
2208  {List.length(a, A, xs) == List.length(a, A, List.reverse(a, A, xs)) : Nat}