Title of article
Δ1-Definability Original Research Article
Author/Authors
Sy D. Friedman، نويسنده , , Boban Velickovic، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 1997
Pages
7
From page
93
To page
99
Abstract
We isolate a condition on a class A of ordinals sufficient to Δ1-code it by a real in a class-generic extension of L. We then apply this condition to show that the class of ordinals of L-cofinality ω is Δ1 in a real of L-degree strictly below O#.
Keywords
Coding , Condensation , Definability
Journal title
Annals of Pure and Applied Logic
Serial Year
1997
Journal title
Annals of Pure and Applied Logic
Record number
890166
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