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   <dc:title>Consistency and optimality</dc:title>
   <dc:creator>Chen, Yijia</dc:creator>
   <dc:creator>Flum, Jörg</dc:creator>
   <dc:creator>Müller, Moritz</dc:creator>
   <dc:contributor>Centre de Recerca Matemàtica</dc:contributor>
   <dc:subject>Conjunts, Teoria de</dc:subject>
   <dc:subject>Complexitat de càlcul</dc:subject>
   <dc:subject>510</dc:subject>
   <dc:description>Assume that the problem Qo is not solvable in polynomial time. For theories T containing a sufficiently rich part of true arithmetic we characterize T U {ConT} as the minimal extension of T proving for some algorithm that it decides Qo as fast as any algorithm B with the property that T proves that B decides Qo. Here, ConT claims the consistency of T. Moreover, we characterize problems with an optimal algorithm in terms of arithmetical theories.</dc:description>
   <dc:date>2011</dc:date>
   <dc:type>info:eu-repo/semantics/preprint</dc:type>
   <dc:identifier>http://hdl.handle.net/2072/169736</dc:identifier>
   <dc:language>eng</dc:language>
   <dc:relation>Prepublicacions del Centre de Recerca Matemàtica;1014</dc:relation>
   <dc:rights>Aquest document està subjecte a una llicència d'ús de Creative Commons, amb la qual es permet copiar, distribuir i comunicar públicament l'obra sempre que se'n citin l'autor original, la universitat i el centre i no se'n faci cap ús comercial ni obra derivada, tal com queda estipulat en la llicència d'ús (http://creativecommons.org/licenses/by-nc-nd/2.5/es/)</dc:rights>
   <dc:format>11</dc:format>
   <dc:format>187164 bytes</dc:format>
   <dc:format>application/pdf</dc:format>
   <dc:format>application/pdf</dc:format>
   <dc:publisher>Centre de Recerca Matemàtica</dc:publisher>
   <dc:source>RECERCAT (Dipòsit de la Recerca de Catalunya)</dc:source>
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