{"id":"https://openalex.org/W2950764641","doi":"https://doi.org/10.3233/com-150031","title":"Hyperprojective hierarchy of qcb <sub>0</sub> -spaces","display_name":"Hyperprojective hierarchy of qcb <sub>0</sub> -spaces","publication_year":2015,"publication_date":"2015-02-01","ids":{"openalex":"https://openalex.org/W2950764641","doi":"https://doi.org/10.3233/com-150031","mag":"2950764641"},"language":"en","primary_location":{"id":"doi:10.3233/com-150031","is_oa":false,"landing_page_url":"https://doi.org/10.3233/com-150031","pdf_url":null,"source":{"id":"https://openalex.org/S4210231662","display_name":"Computability","issn_l":"2211-3568","issn":["2211-3568","2211-3576"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310318577","host_organization_name":"IOS Press","host_organization_lineage":["https://openalex.org/P4310318577"],"host_organization_lineage_names":["IOS Press"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computability","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100638436","display_name":"Matthias Schr\u00f6der","orcid":"https://orcid.org/0009-0007-4295-0230"},"institutions":[{"id":"https://openalex.org/I129774422","display_name":"University of Vienna","ror":"https://ror.org/03prydq77","country_code":"AT","type":"education","lineage":["https://openalex.org/I129774422"]}],"countries":["AT"],"is_corresponding":true,"raw_author_name":"Matthias Schr\u00f6der","raw_affiliation_strings":["Kurt G\u00f6del Research Center, University of Vienna, Vienna, Austria. E-mail: matthias.schroeder@cca-net.de"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Kurt G\u00f6del Research Center, University of Vienna, Vienna, Austria. E-mail: matthias.schroeder@cca-net.de","institution_ids":["https://openalex.org/I129774422"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5035858448","display_name":"Victor Selivanov","orcid":"https://orcid.org/0000-0003-4316-0859"},"institutions":[{"id":"https://openalex.org/I4210092286","display_name":"Institute of Informatics Problems","ror":"https://ror.org/00n8bqs64","country_code":"RU","type":"facility","lineage":["https://openalex.org/I4210092286"]},{"id":"https://openalex.org/I4210127387","display_name":"Siberian Branch of the Russian Academy of Sciences","ror":"https://ror.org/02frkq021","country_code":"RU","type":"funder","lineage":["https://openalex.org/I1313323035","https://openalex.org/I4210127387"]},{"id":"https://openalex.org/I4387152644","display_name":"A.P. Ershov Institute of Informatics Systems, Siberian Branch of the Russian Academy of Sciences","ror":"https://ror.org/01dc8vg74","country_code":null,"type":"government","lineage":["https://openalex.org/I1313323035","https://openalex.org/I4210127387","https://openalex.org/I4387152644"]}],"countries":["RU"],"is_corresponding":false,"raw_author_name":"Victor Selivanov","raw_affiliation_strings":["A.P. Ershov Institute of Informatics Systems SB RAS, Novosibirsk, Russia. E-mail: vseliv@iis.nsk.su"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"A.P. Ershov Institute of Informatics Systems SB RAS, Novosibirsk, Russia. E-mail: vseliv@iis.nsk.su","institution_ids":["https://openalex.org/I4210092286","https://openalex.org/I4210127387","https://openalex.org/I4387152644"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5100638436"],"corresponding_institution_ids":["https://openalex.org/I129774422"],"apc_list":null,"apc_paid":null,"fwci":1.0517,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.82644049,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"4","issue":"1","first_page":"1","last_page":"17"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11596","display_name":"Constraint Satisfaction and Optimization","score":0.9810000061988831,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11596","display_name":"Constraint Satisfaction and Optimization","score":0.9810000061988831,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11727","display_name":"Advanced Algebra and Logic","score":0.9758999943733215,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9664999842643738,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/hierarchy","display_name":"Hierarchy","score":0.49157676100730896},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.34003734588623047},{"id":"https://openalex.org/keywords/political-science","display_name":"Political science","score":0.20351359248161316}],"concepts":[{"id":"https://openalex.org/C31170391","wikidata":"https://www.wikidata.org/wiki/Q188619","display_name":"Hierarchy","level":2,"score":0.49157676100730896},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.34003734588623047},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.20351359248161316},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.3233/com-150031","is_oa":false,"landing_page_url":"https://doi.org/10.3233/com-150031","pdf_url":null,"source":{"id":"https://openalex.org/S4210231662","display_name":"Computability","issn_l":"2211-3568","issn":["2211-3568","2211-3576"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310318577","host_organization_name":"IOS Press","host_organization_lineage":["https://openalex.org/P4310318577"],"host_organization_lineage_names":["IOS Press"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Computability","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1484625174","https://openalex.org/W1539382740","https://openalex.org/W1582269801","https://openalex.org/W1964858768","https://openalex.org/W1967960259","https://openalex.org/W1998986196","https://openalex.org/W2034290319","https://openalex.org/W2069246348","https://openalex.org/W2139572122","https://openalex.org/W2168229531","https://openalex.org/W2322118446","https://openalex.org/W2611511037","https://openalex.org/W2911572548","https://openalex.org/W3037699939"],"related_works":["https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2365264209","https://openalex.org/W2509431957","https://openalex.org/W2026999166","https://openalex.org/W3020924181","https://openalex.org/W2885881666","https://openalex.org/W1992685502","https://openalex.org/W4211007821","https://openalex.org/W2802395037"],"abstract_inverted_index":{"We":[0,26,64],"extend":[1,42],"the":[2,19,32,43,51,61,67,80],"recently":[3],"introduced":[4],"Luzin":[5],"hierarchy":[6,21,34],"of":[7,22,47,54,69,82,94],"qcb":[8,23,71,84],"0":[9,24,72,85],"-spaces":[10,73],"to":[11,35,50,60],"all":[12,28],"countable":[13,55],"ordinals,":[14],"obtaining":[15],"in":[16],"this":[17,36],"way":[18],"hyperprojective":[20,70,98],"-spaces.":[25,86],"generalize":[27],"main":[29],"results":[30],"for":[31],"former":[33],"larger":[37],"hierarchy.":[38,63],"In":[39],"particular,":[40],"we":[41],"Kleene\u2013Kreisel":[44],"continuous":[45,52],"functionals":[46,53],"finite":[48],"types":[49,56],"and":[57],"relate":[58],"them":[59],"new":[62],"show":[65],"that":[66,96],"category":[68,81],"has":[74],"much":[75],"better":[76],"closure":[77],"properties":[78],"than":[79],"projective":[83],"As":[87],"a":[88],"result,":[89],"there":[90],"are":[91,97],"natural":[92],"examples":[93],"spaces":[95],"but":[99],"not":[100],"projective.":[101]},"counts_by_year":[{"year":2022,"cited_by_count":2},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1}],"updated_date":"2026-05-01T06:04:38.248271","created_date":"2025-10-10T00:00:00"}