There is no ordering on the classes in the generalized high/low hierarchies

نویسنده

  • Antonio Montalbán
چکیده

We prove that the existential theory of the Turing degrees, in the language with Turing reduction, 0, and unary relations for the classes in the generalized high/low hierarchy, is decidable.

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عنوان ژورنال:
  • Arch. Math. Log.

دوره 45  شماره 

صفحات  -

تاریخ انتشار 2006