Undecidability Results for Low Complexity Degree Structures

نویسندگان

  • Rodney G. Downey
  • André Nies
چکیده

We prove that the theory of EXPTIME degrees with respect to polynomial time Turing and many-one reducibility is undecidable. To do so we use a coding method based on ideal lattices of Boolean algebras which was introduced in [7]. The method can be applied in fact to all hyper-polynomial time classes.

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تاریخ انتشار 1997