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THE TURING DEGREES BELOW GENERICS AND RANDOMS

Published online by Cambridge University Press:  17 April 2014

RICHARD A. SHORE
RICHARD A. SHORE*
Affiliation:
DEPARTMENT OF MATHEMATICS, CORNELL UNIVERSITY, ITHACA NY 14853, USAE-mail:shore@math.cornell.edu
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Abstract

If X0 and X1 are both generic, the theories of the degrees below X0 and X1 are the same. The same is true if both are random. We show that the n-genericity or n-randomness of X do not suffice to guarantee that the degrees below X have these common theories. We also show that these two theories (for generics and randoms) are different. These results answer questions of Jockusch as well as Barmpalias, Day and Lewis.

Keywords

Turing degreesn-genericsn-randoms
Type
Articles
Information
The Journal of Symbolic Logic , Volume 79 , Issue 1 , March 2014 , pp. 171 - 178
Copyright
Copyright © Association for Symbolic Logic 2014 

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