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|Title:||Closed left-r.e. sets||Authors:||Jain, S.
|Issue Date:||2011||Citation:||Jain, S.,Stephan, F.,Teutsch, J. (2011). Closed left-r.e. sets. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 6648 LNCS : 218-229. ScholarBank@NUS Repository. https://doi.org/10.1007/978-3-642-20877-5_23||Abstract:||A set is called r-closed left-r.e. iff every set r-reducible to it is also a left-r.e. set. It is shown that some but not all left-r.e. cohesive sets are many-one closed left-r.e. sets. Ascending reductions are many-one reductions via an ascending function; left-r.e. cohesive sets are also ascening closed left-r.e. sets. Furthermore, it is shown that there is a weakly 1-generic many-one closed left-r.e. set. © 2011 Springer-Verlag.||Source Title:||Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)||URI:||http://scholarbank.nus.edu.sg/handle/10635/43289||ISBN:||9783642208768||ISSN:||03029743||DOI:||10.1007/978-3-642-20877-5_23|
|Appears in Collections:||Staff Publications|
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