proposition: Fact meetUl : left_distributive (@meet T) (@join T).
proof: Proof. by elim=> [|? ? ih] [|? ?] [|? ?] //=; rewrite meetUl ih. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(path fintype tuple bigop finset div prime finfun) mathcomp(finset)