(* Autor(s): Andrej Dudenhefner (1) Affiliation(s): (1) Saarland University, Saarbrücken, Germany *)
(* Undecidability Result(s): Provability in Hilbert-style calculi (HSC_PRV) Recognizing axiomatizations of Hilbert-style calculi (HSC_AX) *)
Require Undecidability.HilbertCalculi.Reductions.MPCPb_to_HSC_PRV.
Require Undecidability.HilbertCalculi.Reductions.MPCPb_to_HSC_AX.
(* Hilbert-style Axiomatization of the Post Correspondenc Problem *)
Definition ΓPCP := MPCPb_to_HSC_PRV.Argument.ΓPCP.
Check HSC_PRV_undec.

(* Undecidability of Recognizing Axiomatizations of Hilbert-style Calculi *)
Theorem HSC_AX_undec : undecidable HSC_AX.