proposition: Lemma not_le_1_0 : ¬1 ≤ 0.
proof: Proof. now apply lt_not_le_flip, lt_0_1. Qed.
imports: Coq.setoid_ring.Ring MathClasses.interfaces.abstract_algebra MathClasses.interfaces.orders MathClasses.theory.rings MathClasses.orders.orders MathClasses.orders.maps