There is No Fat Orbit

نویسندگان

  • Rodney G. Downey
  • Leo Harrington
چکیده

We give a proof of a theorem of Harrington that there is no orbit of the lattice of recursively enumerable sets containing elements of each nonzero recursively enumerable degree. We also establish some degree theoretical extensions.

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عنوان ژورنال:
  • Ann. Pure Appl. Logic

دوره 80  شماره 

صفحات  -

تاریخ انتشار 1996