{"id":"https://openalex.org/W2004243323","doi":"https://doi.org/10.1016/0304-3975(87)90053-3","title":"Diagonalizations over polynomial time computable sets","display_name":"Diagonalizations over polynomial time computable sets","publication_year":1987,"publication_date":"1987-01-01","ids":{"openalex":"https://openalex.org/W2004243323","doi":"https://doi.org/10.1016/0304-3975(87)90053-3","mag":"2004243323"},"language":"en","primary_location":{"id":"doi:10.1016/0304-3975(87)90053-3","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(87)90053-3","pdf_url":null,"source":{"id":"https://openalex.org/S90727058","display_name":"Theoretical Computer Science","issn_l":"0304-3975","issn":["0304-3975","1879-2294"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Theoretical Computer Science","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/A5059289409","display_name":"Klaus Ambos\u2010Spies","orcid":"https://orcid.org/0000-0003-4898-7505"},"institutions":[{"id":"https://openalex.org/I200332995","display_name":"TU Dortmund University","ror":"https://ror.org/01k97gp34","country_code":"DE","type":"education","lineage":["https://openalex.org/I200332995"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Klaus Ambos-Spies","raw_affiliation_strings":["Lehrsiuhl f\u00fcr Informatik II, Universit\u00e4t Dortmund, D-4600 Dortmund 50, Fed. Rep. Germany","Univ. Dortmund, Dortmund, W. Germany#TAB#"],"affiliations":[{"raw_affiliation_string":"Lehrsiuhl f\u00fcr Informatik II, Universit\u00e4t Dortmund, D-4600 Dortmund 50, Fed. Rep. Germany","institution_ids":["https://openalex.org/I200332995"]},{"raw_affiliation_string":"Univ. Dortmund, Dortmund, W. Germany#TAB#","institution_ids":["https://openalex.org/I200332995"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013649258","display_name":"Hans Fleischhack","orcid":null},"institutions":[{"id":"https://openalex.org/I200332995","display_name":"TU Dortmund University","ror":"https://ror.org/01k97gp34","country_code":"DE","type":"education","lineage":["https://openalex.org/I200332995"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Hans Fleischhack","raw_affiliation_strings":["Lehrsiuhl f\u00fcr Informatik II, Universit\u00e4t Dortmund, D-4600 Dortmund 50, Fed. Rep. Germany","Univ. Dortmund, Dortmund, W. Germany#TAB#"],"affiliations":[{"raw_affiliation_string":"Lehrsiuhl f\u00fcr Informatik II, Universit\u00e4t Dortmund, D-4600 Dortmund 50, Fed. Rep. Germany","institution_ids":["https://openalex.org/I200332995"]},{"raw_affiliation_string":"Univ. Dortmund, Dortmund, W. Germany#TAB#","institution_ids":["https://openalex.org/I200332995"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5030586450","display_name":"Hagen Huwig","orcid":null},"institutions":[{"id":"https://openalex.org/I200332995","display_name":"TU Dortmund University","ror":"https://ror.org/01k97gp34","country_code":"DE","type":"education","lineage":["https://openalex.org/I200332995"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Hagen Huwig","raw_affiliation_strings":["Lehrsiuhl f\u00fcr Informatik II, Universit\u00e4t Dortmund, D-4600 Dortmund 50, Fed. Rep. Germany","Univ. Dortmund, Dortmund, W. Germany#TAB#"],"affiliations":[{"raw_affiliation_string":"Lehrsiuhl f\u00fcr Informatik II, Universit\u00e4t Dortmund, D-4600 Dortmund 50, Fed. Rep. Germany","institution_ids":["https://openalex.org/I200332995"]},{"raw_affiliation_string":"Univ. Dortmund, Dortmund, W. Germany#TAB#","institution_ids":["https://openalex.org/I200332995"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5059289409"],"corresponding_institution_ids":["https://openalex.org/I200332995"],"apc_list":{"value":2690,"currency":"USD","value_usd":2690},"apc_paid":null,"fwci":1.6017,"has_fulltext":false,"cited_by_count":51,"citation_normalized_percentile":{"value":0.8139382,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"51","issue":"1-2","first_page":"177","last_page":"204"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12002","display_name":"Computability, Logic, AI Algorithms","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T12002","display_name":"Computability, Logic, AI Algorithms","score":0.9998999834060669,"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/T11567","display_name":"semigroups and automata theory","score":0.9955000281333923,"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/T10237","display_name":"Cryptography and Data Security","score":0.9937999844551086,"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/oracle","display_name":"Oracle","score":0.6897476315498352},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.6491551995277405},{"id":"https://openalex.org/keywords/time-complexity","display_name":"Time complexity","score":0.6182684898376465},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.5869605541229248},{"id":"https://openalex.org/keywords/polynomial","display_name":"Polynomial","score":0.5598125457763672},{"id":"https://openalex.org/keywords/computable-function","display_name":"Computable function","score":0.5596426129341125},{"id":"https://openalex.org/keywords/complexity-class","display_name":"Complexity class","score":0.5422912240028381},{"id":"https://openalex.org/keywords/computable-number","display_name":"Computable number","score":0.5023584365844727},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.4504354000091553},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4381566047668457},{"id":"https://openalex.org/keywords/computable-analysis","display_name":"Computable analysis","score":0.39670616388320923},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.327717661857605},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.26492127776145935},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.22051647305488586}],"concepts":[{"id":"https://openalex.org/C55166926","wikidata":"https://www.wikidata.org/wiki/Q2892946","display_name":"Oracle","level":2,"score":0.6897476315498352},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.6491551995277405},{"id":"https://openalex.org/C311688","wikidata":"https://www.wikidata.org/wiki/Q2393193","display_name":"Time complexity","level":2,"score":0.6182684898376465},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5869605541229248},{"id":"https://openalex.org/C90119067","wikidata":"https://www.wikidata.org/wiki/Q43260","display_name":"Polynomial","level":2,"score":0.5598125457763672},{"id":"https://openalex.org/C54271186","wikidata":"https://www.wikidata.org/wiki/Q1148456","display_name":"Computable function","level":2,"score":0.5596426129341125},{"id":"https://openalex.org/C39637292","wikidata":"https://www.wikidata.org/wiki/Q908207","display_name":"Complexity class","level":3,"score":0.5422912240028381},{"id":"https://openalex.org/C156382255","wikidata":"https://www.wikidata.org/wiki/Q818895","display_name":"Computable number","level":4,"score":0.5023584365844727},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.4504354000091553},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4381566047668457},{"id":"https://openalex.org/C27318111","wikidata":"https://www.wikidata.org/wiki/Q5157264","display_name":"Computable analysis","level":3,"score":0.39670616388320923},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.327717661857605},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.26492127776145935},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.22051647305488586},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0},{"id":"https://openalex.org/C115903868","wikidata":"https://www.wikidata.org/wiki/Q80993","display_name":"Software engineering","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1016/0304-3975(87)90053-3","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(87)90053-3","pdf_url":null,"source":{"id":"https://openalex.org/S90727058","display_name":"Theoretical Computer Science","issn_l":"0304-3975","issn":["0304-3975","1879-2294"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Theoretical Computer Science","raw_type":"journal-article"},{"id":"pmh:oai:aleph.bib-bvb.de:BVB01-000243051","is_oa":false,"landing_page_url":null,"pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":29,"referenced_works":["https://openalex.org/W348975399","https://openalex.org/W1490686376","https://openalex.org/W1542856213","https://openalex.org/W1545035463","https://openalex.org/W1596783361","https://openalex.org/W1972481159","https://openalex.org/W1982717290","https://openalex.org/W1986203294","https://openalex.org/W1993138363","https://openalex.org/W2009972827","https://openalex.org/W2032079969","https://openalex.org/W2052936500","https://openalex.org/W2056414301","https://openalex.org/W2059997023","https://openalex.org/W2062767125","https://openalex.org/W2073728699","https://openalex.org/W2077694941","https://openalex.org/W2082636129","https://openalex.org/W2333253576","https://openalex.org/W2475764596","https://openalex.org/W2484632590","https://openalex.org/W2497366721","https://openalex.org/W2500837594","https://openalex.org/W6611821308","https://openalex.org/W6629224141","https://openalex.org/W6632510735","https://openalex.org/W6632515200","https://openalex.org/W6635871855","https://openalex.org/W6999735909"],"related_works":["https://openalex.org/W2150482238","https://openalex.org/W197714092","https://openalex.org/W1577501449","https://openalex.org/W153068418","https://openalex.org/W2527631632","https://openalex.org/W1994403863","https://openalex.org/W2108904240","https://openalex.org/W1987175852","https://openalex.org/W2625390511","https://openalex.org/W4232418676"],"abstract_inverted_index":null,"counts_by_year":[{"year":2020,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}