{"id":"https://openalex.org/W1989148041","doi":"https://doi.org/10.1016/0304-3975(83)90006-3","title":"On some decision questions concerning pushdown machines","display_name":"On some decision questions concerning pushdown machines","publication_year":1983,"publication_date":"1983-08-01","ids":{"openalex":"https://openalex.org/W1989148041","doi":"https://doi.org/10.1016/0304-3975(83)90006-3","mag":"1989148041"},"language":"en","primary_location":{"id":"doi:10.1016/0304-3975(83)90006-3","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(83)90006-3","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/A5110211208","display_name":"\u00d3scar H. Ibarra","orcid":null},"institutions":[{"id":"https://openalex.org/I130238516","display_name":"University of Minnesota","ror":"https://ror.org/017zqws13","country_code":"US","type":"education","lineage":["https://openalex.org/I130238516"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Oscar H. Ibarra","raw_affiliation_strings":["Department of Computer Science, University of Minnesota, Minneapolis, MN 55455, U.S.A"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Minnesota, Minneapolis, MN 55455, U.S.A","institution_ids":["https://openalex.org/I130238516"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5110211208"],"corresponding_institution_ids":["https://openalex.org/I130238516"],"apc_list":{"value":2690,"currency":"USD","value_usd":2690},"apc_paid":null,"fwci":0.5673,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.6015722,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"24","issue":"3","first_page":"313","last_page":"322"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":1.0,"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/T11567","display_name":"semigroups and automata theory","score":1.0,"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/T10126","display_name":"Logic, programming, and type systems","score":0.9959999918937683,"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"}},{"id":"https://openalex.org/T11727","display_name":"Advanced Algebra and Logic","score":0.9943000078201294,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/pushdown-automaton","display_name":"Pushdown automaton","score":0.6183027029037476},{"id":"https://openalex.org/keywords/embedded-pushdown-automaton","display_name":"Embedded pushdown automaton","score":0.6109234690666199},{"id":"https://openalex.org/keywords/deterministic-context-free-grammar","display_name":"Deterministic context-free grammar","score":0.5960607528686523},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5471897721290588},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.46439841389656067},{"id":"https://openalex.org/keywords/deterministic-pushdown-automaton","display_name":"Deterministic pushdown automaton","score":0.4607227146625519},{"id":"https://openalex.org/keywords/context-free-language","display_name":"Context-free language","score":0.4468673765659332},{"id":"https://openalex.org/keywords/decision-problem","display_name":"Decision problem","score":0.4149782657623291},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.38818442821502686},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3764793872833252},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3471492528915405},{"id":"https://openalex.org/keywords/calculus","display_name":"Calculus (dental)","score":0.3238157629966736},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.27043354511260986},{"id":"https://openalex.org/keywords/automaton","display_name":"Automaton","score":0.22631070017814636},{"id":"https://openalex.org/keywords/rule-based-machine-translation","display_name":"Rule-based machine translation","score":0.2240159809589386},{"id":"https://openalex.org/keywords/finite-state-machine","display_name":"Finite-state machine","score":0.20043477416038513},{"id":"https://openalex.org/keywords/context-free-grammar","display_name":"Context-free grammar","score":0.12365663051605225},{"id":"https://openalex.org/keywords/automata-theory","display_name":"Automata theory","score":0.10866791009902954},{"id":"https://openalex.org/keywords/parsing","display_name":"Parsing","score":0.10803225636482239}],"concepts":[{"id":"https://openalex.org/C77944639","wikidata":"https://www.wikidata.org/wiki/Q751443","display_name":"Pushdown automaton","level":3,"score":0.6183027029037476},{"id":"https://openalex.org/C27034413","wikidata":"https://www.wikidata.org/wiki/Q5370010","display_name":"Embedded pushdown automaton","level":5,"score":0.6109234690666199},{"id":"https://openalex.org/C177638518","wikidata":"https://www.wikidata.org/wiki/Q3435975","display_name":"Deterministic context-free grammar","level":5,"score":0.5960607528686523},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5471897721290588},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.46439841389656067},{"id":"https://openalex.org/C74919329","wikidata":"https://www.wikidata.org/wiki/Q378713","display_name":"Deterministic pushdown automaton","level":5,"score":0.4607227146625519},{"id":"https://openalex.org/C198838072","wikidata":"https://www.wikidata.org/wiki/Q729271","display_name":"Context-free language","level":3,"score":0.4468673765659332},{"id":"https://openalex.org/C115988155","wikidata":"https://www.wikidata.org/wiki/Q3262192","display_name":"Decision problem","level":2,"score":0.4149782657623291},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.38818442821502686},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3764793872833252},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3471492528915405},{"id":"https://openalex.org/C2777686260","wikidata":"https://www.wikidata.org/wiki/Q144037","display_name":"Calculus (dental)","level":2,"score":0.3238157629966736},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.27043354511260986},{"id":"https://openalex.org/C112505250","wikidata":"https://www.wikidata.org/wiki/Q787116","display_name":"Automaton","level":2,"score":0.22631070017814636},{"id":"https://openalex.org/C53893814","wikidata":"https://www.wikidata.org/wiki/Q7378909","display_name":"Rule-based machine translation","level":2,"score":0.2240159809589386},{"id":"https://openalex.org/C167822520","wikidata":"https://www.wikidata.org/wiki/Q176452","display_name":"Finite-state machine","level":2,"score":0.20043477416038513},{"id":"https://openalex.org/C97212296","wikidata":"https://www.wikidata.org/wiki/Q338047","display_name":"Context-free grammar","level":3,"score":0.12365663051605225},{"id":"https://openalex.org/C116248031","wikidata":"https://www.wikidata.org/wiki/Q214526","display_name":"Automata theory","level":3,"score":0.10866791009902954},{"id":"https://openalex.org/C186644900","wikidata":"https://www.wikidata.org/wiki/Q194152","display_name":"Parsing","level":2,"score":0.10803225636482239},{"id":"https://openalex.org/C158008952","wikidata":"https://www.wikidata.org/wiki/Q617295","display_name":"Nondeterministic finite automaton","level":4,"score":0.0},{"id":"https://openalex.org/C199343813","wikidata":"https://www.wikidata.org/wiki/Q12128","display_name":"Dentistry","level":1,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C134083981","wikidata":"https://www.wikidata.org/wiki/Q1754022","display_name":"Tree-adjoining grammar","level":4,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0304-3975(83)90006-3","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(83)90006-3","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"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8100000023841858,"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":29,"referenced_works":["https://openalex.org/W39461830","https://openalex.org/W649173217","https://openalex.org/W1535681052","https://openalex.org/W1562818191","https://openalex.org/W1578332044","https://openalex.org/W1980915723","https://openalex.org/W1986683780","https://openalex.org/W1988297344","https://openalex.org/W2002089154","https://openalex.org/W2012525080","https://openalex.org/W2012813724","https://openalex.org/W2020364223","https://openalex.org/W2023999667","https://openalex.org/W2024987067","https://openalex.org/W2041168146","https://openalex.org/W2076858908","https://openalex.org/W2092008211","https://openalex.org/W2115082275","https://openalex.org/W2188913344","https://openalex.org/W2545845195","https://openalex.org/W4302339081","https://openalex.org/W6601620188","https://openalex.org/W6633664075","https://openalex.org/W6645548829","https://openalex.org/W6653382602","https://openalex.org/W6655400265","https://openalex.org/W6659170530","https://openalex.org/W6660595779","https://openalex.org/W6676896386"],"related_works":["https://openalex.org/W2067895928","https://openalex.org/W2472752294","https://openalex.org/W2074593591","https://openalex.org/W1486486721","https://openalex.org/W2089141720","https://openalex.org/W2116448069","https://openalex.org/W2591091263","https://openalex.org/W2016546191","https://openalex.org/W1972232894","https://openalex.org/W4253694846"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
