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dc.contributor.authorCastro Rabal, Jorge
dc.contributor.authorSeara Ojea, Carlos
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciències de la Computació
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtiques
dc.date.accessioned2020-07-30T17:42:15Z
dc.date.available2020-07-30T17:42:15Z
dc.date.issued1990
dc.identifier.citationCastro, J.; Seara, C. Characterizations of some complexity classes between [theta sub 2 super p] and [delta sub 2 super p]. 1990.
dc.identifier.urihttp://hdl.handle.net/2117/328115
dc.description.abstractWe give some characterizations of the classes P super NP [0(log super k n)]. First, we show that these classes are equal to classes AC super k-1 (N P). Second, we prove that they are also equivalent to some classes defined in the Extended Boolean hierarchy. Finally, we show that there exists a strong connection between classes defined by polynomial time Turing machines with few queries to an N P oracle and classes defined by small size circuits with N P oracle gates. With these results we solve open questions arosed by K. W. Wagner and by E. Allender and C.B. Wilson.
dc.format.extent13 p.
dc.language.isoeng
dc.relation.ispartofseriesLSI-90-27
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Informàtica
dc.subject.lcshTuring machines
dc.subject.otherExtended Boolean hierarchy
dc.titleCharacterizations of some complexity classes between [theta sub 2 super p] and [delta sub 2 super p]
dc.typeExternal research report
dc.subject.lemacTuring, Màquines de
dc.contributor.groupUniversitat Politècnica de Catalunya. LARCA - Laboratori d'Algorísmia Relacional, Complexitat i Aprenentatge
dc.contributor.groupUniversitat Politècnica de Catalunya. CGA - Computational Geometry and Applications
dc.rights.accessOpen Access
local.identifier.drac1390230
dc.description.versionPostprint (published version)
local.citation.authorCastro, J.; Seara, C.


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