apply iff_trans with (1 := existsb_exists _ _).
It instanciates the first argument of iff_trans
with existsb_exists
before applying it :
Require Import List.
Check iff_trans.
(* First argument A <-> B*)
Check existsb_exists.
Check (@iff_trans _ _ _ (@existsb_exists _ _ _)).
Last updated: Oct 13 2024 at 01:02 UTC