proposition: Lemma testlemma9 : hzlth 0 ( nattohz 9 ).
proof: Proof. apply ( istranshzlth _ ( nattohz 3 ) ). - apply testlemma3. - apply ( istranshzlth _ ( nattohz 6 ) ). + apply testlemma3. + apply testlemma3. Defined.
imports: UniMath.PAdics.lemmas UniMath.NumberSystems.Integers UniMath.Foundations.Preamble