{"id":"https://openalex.org/W2115915222","doi":"https://doi.org/10.1137/0222054","title":"Deciding Properties of Nonregular Programs","display_name":"Deciding Properties of Nonregular Programs","publication_year":1993,"publication_date":"1993-08-01","ids":{"openalex":"https://openalex.org/W2115915222","doi":"https://doi.org/10.1137/0222054","mag":"2115915222"},"language":"en","primary_location":{"id":"doi:10.1137/0222054","is_oa":false,"landing_page_url":"https://doi.org/10.1137/0222054","pdf_url":null,"source":{"id":"https://openalex.org/S153560523","display_name":"SIAM Journal on Computing","issn_l":"0097-5397","issn":["0097-5397","1095-7111"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320508","host_organization_name":"Society for Industrial and Applied Mathematics","host_organization_lineage":["https://openalex.org/P4310320508"],"host_organization_lineage_names":["Society for Industrial and Applied Mathematics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SIAM Journal on Computing","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/A5088778612","display_name":"David Harel","orcid":"https://orcid.org/0000-0001-7240-3931"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"David Harel","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5027512066","display_name":"Danny Raz","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Danny Raz","raw_affiliation_strings":[],"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5088778612"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.0169,"has_fulltext":false,"cited_by_count":24,"citation_normalized_percentile":{"value":0.77771205,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"22","issue":"4","first_page":"857","last_page":"874"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9991999864578247,"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":0.9991999864578247,"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":0.9986000061035156,"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/T11010","display_name":"Logic, Reasoning, and Knowledge","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/decidability","display_name":"Decidability","score":0.7452111840248108},{"id":"https://openalex.org/keywords/symbol","display_name":"Symbol (formal)","score":0.657588005065918},{"id":"https://openalex.org/keywords/pushdown-automaton","display_name":"Pushdown automaton","score":0.6087771654129028},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.586673378944397},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5495004057884216},{"id":"https://openalex.org/keywords/nested-word","display_name":"Nested word","score":0.4742901921272278},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.471456378698349},{"id":"https://openalex.org/keywords/conjecture","display_name":"Conjecture","score":0.4520615339279175},{"id":"https://openalex.org/keywords/deterministic-pushdown-automaton","display_name":"Deterministic pushdown automaton","score":0.44730234146118164},{"id":"https://openalex.org/keywords/word","display_name":"Word (group theory)","score":0.4293903410434723},{"id":"https://openalex.org/keywords/regular-language","display_name":"Regular language","score":0.4231874942779541},{"id":"https://openalex.org/keywords/automaton","display_name":"Automaton","score":0.4197847843170166},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.40704795718193054},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.30974873900413513},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.256855845451355},{"id":"https://openalex.org/keywords/automata-theory","display_name":"Automata theory","score":0.13885259628295898},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.06390473246574402},{"id":"https://openalex.org/keywords/nondeterministic-finite-automaton","display_name":"Nondeterministic finite automaton","score":0.06269150972366333}],"concepts":[{"id":"https://openalex.org/C153269930","wikidata":"https://www.wikidata.org/wiki/Q430001","display_name":"Decidability","level":2,"score":0.7452111840248108},{"id":"https://openalex.org/C134400042","wikidata":"https://www.wikidata.org/wiki/Q2372244","display_name":"Symbol (formal)","level":2,"score":0.657588005065918},{"id":"https://openalex.org/C77944639","wikidata":"https://www.wikidata.org/wiki/Q751443","display_name":"Pushdown automaton","level":3,"score":0.6087771654129028},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.586673378944397},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5495004057884216},{"id":"https://openalex.org/C92117001","wikidata":"https://www.wikidata.org/wiki/Q6997829","display_name":"Nested word","level":5,"score":0.4742901921272278},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.471456378698349},{"id":"https://openalex.org/C2780990831","wikidata":"https://www.wikidata.org/wiki/Q319141","display_name":"Conjecture","level":2,"score":0.4520615339279175},{"id":"https://openalex.org/C74919329","wikidata":"https://www.wikidata.org/wiki/Q378713","display_name":"Deterministic pushdown automaton","level":5,"score":0.44730234146118164},{"id":"https://openalex.org/C90805587","wikidata":"https://www.wikidata.org/wiki/Q10944557","display_name":"Word (group theory)","level":2,"score":0.4293903410434723},{"id":"https://openalex.org/C52370388","wikidata":"https://www.wikidata.org/wiki/Q752532","display_name":"Regular language","level":3,"score":0.4231874942779541},{"id":"https://openalex.org/C112505250","wikidata":"https://www.wikidata.org/wiki/Q787116","display_name":"Automaton","level":2,"score":0.4197847843170166},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.40704795718193054},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.30974873900413513},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.256855845451355},{"id":"https://openalex.org/C116248031","wikidata":"https://www.wikidata.org/wiki/Q214526","display_name":"Automata theory","level":3,"score":0.13885259628295898},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.06390473246574402},{"id":"https://openalex.org/C158008952","wikidata":"https://www.wikidata.org/wiki/Q617295","display_name":"Nondeterministic finite automaton","level":4,"score":0.06269150972366333},{"id":"https://openalex.org/C174327141","wikidata":"https://www.wikidata.org/wiki/Q176837","display_name":"Quantum finite automata","level":4,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1137/0222054","is_oa":false,"landing_page_url":"https://doi.org/10.1137/0222054","pdf_url":null,"source":{"id":"https://openalex.org/S153560523","display_name":"SIAM Journal on Computing","issn_l":"0097-5397","issn":["0097-5397","1095-7111"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320508","host_organization_name":"Society for Industrial and Applied Mathematics","host_organization_lineage":["https://openalex.org/P4310320508"],"host_organization_lineage_names":["Society for Industrial and Applied Mathematics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SIAM Journal on Computing","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Quality Education","score":0.6000000238418579,"id":"https://metadata.un.org/sdg/4"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W1123910569","https://openalex.org/W1444202976","https://openalex.org/W1481620284","https://openalex.org/W1519854400","https://openalex.org/W1562963764","https://openalex.org/W1964845238","https://openalex.org/W1997716585","https://openalex.org/W2001388124","https://openalex.org/W2024395666","https://openalex.org/W2031775313","https://openalex.org/W2033071128","https://openalex.org/W2062879749","https://openalex.org/W2069709605","https://openalex.org/W2157390113","https://openalex.org/W4205313167","https://openalex.org/W4301662502"],"related_works":["https://openalex.org/W2039777175","https://openalex.org/W3105591226","https://openalex.org/W2041168146","https://openalex.org/W1884709457","https://openalex.org/W2541894000","https://openalex.org/W2069826658","https://openalex.org/W1562818191","https://openalex.org/W2604798101","https://openalex.org/W2907462136","https://openalex.org/W218528102"],"abstract_inverted_index":{"Extensions":[0],"of":[1,13,21,41,54,67,88,114,131],"propositional":[2],"dynamic":[3],"logic":[4],"(PDL)":[5],"with":[6,35,128],"nonregular":[7,14],"programs":[8,43],"are":[9,16],"considered.":[10],"Three":[11],"classes":[12],"languages":[15,56,90],"defined,":[17],"and":[18],"for":[19,27],"each":[20,104],"them":[22],"it":[23,119],"is":[24,48,142],"shown":[25],"that":[26,61,126],"any":[28],"language":[29,133],"L":[30,36],"in":[31,117],"the":[32,39,55,65,89,123,129,132],"class,":[33],"PDL,":[34],"added":[37],"to":[38,121],"set":[40],"regular":[42],"as":[44],"a":[45,99,110],"new":[46,101],"program,":[47],"decidable.":[49,143],"The":[50,79,106],"first":[51],"class":[52,81,108],"consists":[53,87],"accepted":[57,91],"by":[58,92],"pushdown":[59],"automata":[60],"act":[62],"only":[63],"on":[64],"basis":[66],"their":[68],"input":[69],"symbol,":[70],"except":[71],"when":[72],"determining":[73],"whether":[74],"they":[75],"reject":[76],"or":[77],"continue.":[78],"second":[80],"(which":[82],"contains":[83],"even":[84],"noncontext-free":[85],"languages)":[86],"deterministic":[93],"stack":[94],"machines,":[95],"but":[96],"which":[97],"have":[98],"unique":[100],"symbol":[102],"prefixing":[103],"word.":[105],"third":[107],"represents":[109],"certain":[111],"delicate":[112],"combination":[113],"these,":[115],"and,":[116],"particular,":[118],"serves":[120],"prove":[122],"1983":[124],"conjecture":[125],"PDL":[127],"addition":[130],"$\\{":[134],"{a^i":[135],"b^i":[136],"c^i":[137],"|i":[138],"\\geqslant":[139],"0}":[140],"\\}$":[141]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":3}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
