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Index sets for classes of high rank structures

Published online by Cambridge University Press:  12 March 2014

W. Calvert ,
E. Fokina ,
S. S. Goncharov ,
J. F. Knight ,
O. Kudinov ,
A. S. Morozov  and
V. Puzarenko
W. Calvert
Affiliation:
Department of Mathematics & Statistics, Murray State University, Murray, Kentucky, USA. E-mail: wesley.calvert@murraystate.edu
E. Fokina
Affiliation:
Sobolev Institute of Mathematics, Kortyug Prosr 4, 630090, Novosibirsk, Russia. E-mail: e_fokina@math.nsc.ru
S. S. Goncharov
Affiliation:
Sobolev Institute of Mathematics, Kortyug Prosr 4, 630090, Novosibirsk, Russia. E-mail: s.s.goncharov@mail.ru
J. F. Knight
Affiliation:
Department of Mathematics, University of Notre Dame, 255 Hurley Hall, Notre Dame, Indiana 46556, U.S.A.. E-mail: knight.1@nd.edu
O. Kudinov
Affiliation:
Sobolev Institute of Mathematics, Kortyug Prosr. 4, 630090, Novosibirsk, Russia. E-mail: kud@math.nsc.ru
A. S. Morozov
Affiliation:
Sobolev Institute of Mathematics, Kortyug Prosr. 4, 630090, Novosibirsk, Russia. E-mail: morozov@math.nsc.ru
V. Puzarenko
Affiliation:
Sobolev Institute of Mathematics, Kortyug Prosr. 4, 630090, Novosibirsk, Russia. E-mail: vagrig01973@mail.ru
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Abstract

This paper calculates, in a precise way. the complexity of the index sets for three classes of computable structures: the class of structures of Scott rank , the class , of structures of Scott rank , and the class K of all structures of non-computable Scott rank. We show that I(K) is m-complete is m-complete relative to Kleene's and is m-complete relative to .

Type
Research Article
Information
The Journal of Symbolic Logic , Volume 72 , Issue 4 , December 2007 , pp. 1418 - 1432
Copyright
Copyright © Association for Symbolic Logic 2007

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References

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