{"id":"https://openalex.org/W1991961178","doi":"https://doi.org/10.1016/s0022-0000(71)80007-7","title":"The use of lists in the study of undecidable problemsin automata theory","display_name":"The use of lists in the study of undecidable problemsin automata theory","publication_year":1971,"publication_date":"1971-02-01","ids":{"openalex":"https://openalex.org/W1991961178","doi":"https://doi.org/10.1016/s0022-0000(71)80007-7","mag":"1991961178"},"language":"en","primary_location":{"id":"doi:10.1016/s0022-0000(71)80007-7","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0022-0000(71)80007-7","pdf_url":null,"source":{"id":"https://openalex.org/S141020589","display_name":"Journal of Computer and System Sciences","issn_l":"0022-0000","issn":["0022-0000","1090-2724"],"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":"Journal of Computer and System Sciences","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/A5104946959","display_name":"Juris Hartmanis","orcid":null},"institutions":[{"id":"https://openalex.org/I205783295","display_name":"Cornell University","ror":"https://ror.org/05bnh6r87","country_code":"US","type":"education","lineage":["https://openalex.org/I205783295"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"J. Hartmanis","raw_affiliation_strings":["Department of Computer Science, Cornell University, Ithaca, N.Y. 14850, USA"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, Cornell University, Ithaca, N.Y. 14850, USA","institution_ids":["https://openalex.org/I205783295"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5109086886","display_name":"F. D. Lewis","orcid":null},"institutions":[{"id":"https://openalex.org/I205783295","display_name":"Cornell University","ror":"https://ror.org/05bnh6r87","country_code":"US","type":"education","lineage":["https://openalex.org/I205783295"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"F.D. Lewis","raw_affiliation_strings":["Department of Computer Science, Cornell University, Ithaca, N.Y. 14850, USA"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, Cornell University, Ithaca, N.Y. 14850, USA","institution_ids":["https://openalex.org/I205783295"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5104946959"],"corresponding_institution_ids":["https://openalex.org/I205783295"],"apc_list":{"value":2520,"currency":"USD","value_usd":2520},"apc_paid":null,"fwci":0.56,"has_fulltext":false,"cited_by_count":11,"citation_normalized_percentile":{"value":0.61354475,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"5","issue":"1","first_page":"54","last_page":"66"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12002","display_name":"Computability, Logic, AI Algorithms","score":0.9998000264167786,"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":0.9998000264167786,"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":0.9993000030517578,"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/T12072","display_name":"Machine Learning and Algorithms","score":0.9944000244140625,"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/undecidable-problem","display_name":"Undecidable problem","score":0.9475816488265991},{"id":"https://openalex.org/keywords/automaton","display_name":"Automaton","score":0.5957736968994141},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5849133729934692},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.3789316415786743},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3753528892993927},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3593819737434387},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.33859336376190186},{"id":"https://openalex.org/keywords/decidability","display_name":"Decidability","score":0.2750120162963867}],"concepts":[{"id":"https://openalex.org/C192034797","wikidata":"https://www.wikidata.org/wiki/Q3502995","display_name":"Undecidable problem","level":3,"score":0.9475816488265991},{"id":"https://openalex.org/C112505250","wikidata":"https://www.wikidata.org/wiki/Q787116","display_name":"Automaton","level":2,"score":0.5957736968994141},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5849133729934692},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3789316415786743},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3753528892993927},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3593819737434387},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.33859336376190186},{"id":"https://openalex.org/C153269930","wikidata":"https://www.wikidata.org/wiki/Q430001","display_name":"Decidability","level":2,"score":0.2750120162963867}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/s0022-0000(71)80007-7","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0022-0000(71)80007-7","pdf_url":null,"source":{"id":"https://openalex.org/S141020589","display_name":"Journal of Computer and System Sciences","issn_l":"0022-0000","issn":["0022-0000","1090-2724"],"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":"Journal of Computer and System Sciences","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1483568252","https://openalex.org/W1963780006","https://openalex.org/W1987410148","https://openalex.org/W2008131652","https://openalex.org/W2045033949","https://openalex.org/W2087443598","https://openalex.org/W2117832390","https://openalex.org/W2530006810","https://openalex.org/W2913148016","https://openalex.org/W4253210619","https://openalex.org/W4255503374","https://openalex.org/W6647256952"],"related_works":["https://openalex.org/W1563786920","https://openalex.org/W2518552594","https://openalex.org/W2964598103","https://openalex.org/W2293901330","https://openalex.org/W2597532023","https://openalex.org/W2066032119","https://openalex.org/W2963736240","https://openalex.org/W1994076373","https://openalex.org/W4299446758","https://openalex.org/W332733814"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}