proposition: Lemma Str_nth_positives (n : nat) : Str_nth n positives = 1 + naturals_to_semiring nat A n.
proof: Proof. unfold positives. now rewrite Str_nth_positives_help. Qed.
imports: Coq.setoid_ring.Ring Coq.Arith.Factorial MathClasses.misc.workaround_tactics MathClasses.interfaces.abstract_algebra MathClasses.interfaces.additional_operations MathClasses.interfaces.orders MathClasses.interfaces.naturals MathClasses.interfaces.integers MathClasses.theory.nat_pow MathClasses.theory.int_pow MathClasses.theory.streams