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(** ** Injection from [nat] to [R]                       *)
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(* NOTE: keeping inconsistent variable names for backward compatibility. *)
Lemma Zeq_bool_IZR : forall x y:Z, IZR x = IZR y -> Zeq_bool x y = true.
#[deprecated(since="8.19")]
Notation inser_trans_R := inser_trans_R_depr (only parsing).