proposition: Lemma meet_lb_3_l x y z : x ⊓ y ⊓ z ≤ x.
proof: Proof. transitivity (x ⊓ y); apply meet_lb_l. Qed.
imports: HoTT.Classes.interfaces.abstract_algebra HoTT.Classes.interfaces.orders HoTT.Classes.orders.semirings HoTT.Classes.theory.lattices