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INVARIANCE AND NONINVARIANCE IN THE LATTICE OF $\Pi_1^0$ CLASSES

Published online by Cambridge University Press:  03 December 2004

PETER A. CHOLAK
Affiliation:
Department of Mathematics, University of Notre Dame, Notre Dame, IN 46556-5683, [email protected]
ROD DOWNEY
Affiliation:
School of Mathematics, Statistics and Computer Science, Victoria University, PO Box 600, Wellington, New [email protected]
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Abstract

It is proved that there are two minimal $\Pi_1^0$ classes that are not automorphic.

Keywords

Type
Notes and Papers
Copyright
The London Mathematical Society 2004

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