Please use this identifier to cite or link to this item: https://doi.org/10.2178/jsl/1107298519
Title: On the definable ideal generated by nonbounding c.e. degrees
Authors: Yu, L.
Yang, Y. 
Issue Date: Mar-2005
Citation: Yu, L., Yang, Y. (2005-03). On the definable ideal generated by nonbounding c.e. degrees. Journal of Symbolic Logic 70 (1) : 252-270. ScholarBank@NUS Repository. https://doi.org/10.2178/jsl/1107298519
Abstract: Let [NB]1 denote the ideal generated by nonbounding c.e. degrees and NCup the ideal of noncuppable c.e. degrees. We show that both [NB] 1 ∩ NCup and the ideal generated by nonbounding and noncuppable degrees are new, in the sense that they are different from M, [NB]1 and NCup - the only three known definable ideals so far. © 2005, Association for Symbolic Logic.
Source Title: Journal of Symbolic Logic
URI: http://scholarbank.nus.edu.sg/handle/10635/103786
ISSN: 00224812
DOI: 10.2178/jsl/1107298519
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