fact: Definition Z_abs_def@{} : forall x : PairT.T N, (exists n : N, naturals_to_semiring N Z n = ' x) |_| (exists n : N, naturals_to_semiring N Z n = - ' x).
imports: HoTT.HIT.quotient HoTT.TruncType HoTT.Basics.Trunc HoTT.Classes.implementations.peano_naturals HoTT.Classes.interfaces.abstract_algebra HoTT.Classes.interfaces.orders HoTT.Classes.interfaces.integers HoTT.Classes.theory.rings HoTT.Classes.theory.groups HoTT.Classes.theory.apartness HoTT.Classes.orders.sum HoTT.Classes.orders.rings HoTT.Classes.tactics.ring_tac HoTT.Classes.theory.naturals