{"id":"https://openalex.org/W1646789098","doi":"https://doi.org/10.1007/978-3-662-47666-6_35","title":"An Approach to Computing Downward Closures","display_name":"An Approach to Computing Downward Closures","publication_year":2015,"publication_date":"2015-01-01","ids":{"openalex":"https://openalex.org/W1646789098","doi":"https://doi.org/10.1007/978-3-662-47666-6_35","mag":"1646789098"},"language":"en","primary_location":{"id":"doi:10.1007/978-3-662-47666-6_35","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-662-47666-6_35","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"book-chapter","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/A5083429244","display_name":"Georg Zetzsche","orcid":"https://orcid.org/0000-0002-6421-4388"},"institutions":[{"id":"https://openalex.org/I153267046","display_name":"University of Kaiserslautern","ror":"https://ror.org/04zrf7b53","country_code":"DE","type":"education","lineage":["https://openalex.org/I153267046"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Georg Zetzsche","raw_affiliation_strings":["Technische Universit\u00e4t Kaiserslautern, Fachbereich Informatik, Concurrency Theory Group, Kaiserslautern, Germany"],"affiliations":[{"raw_affiliation_string":"Technische Universit\u00e4t Kaiserslautern, Fachbereich Informatik, Concurrency Theory Group, Kaiserslautern, Germany","institution_ids":["https://openalex.org/I153267046"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5083429244"],"corresponding_institution_ids":["https://openalex.org/I153267046"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":6.4784,"has_fulltext":false,"cited_by_count":35,"citation_normalized_percentile":{"value":0.97186531,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"440","last_page":"451"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9988999962806702,"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":0.9988999962806702,"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/T10142","display_name":"Formal Methods in Verification","score":0.9987999796867371,"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":0.9973000288009644,"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/closure","display_name":"Closure (psychology)","score":0.8059097528457642},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7129279375076294},{"id":"https://openalex.org/keywords/regular-language","display_name":"Regular language","score":0.5993935465812683},{"id":"https://openalex.org/keywords/pushdown-automaton","display_name":"Pushdown automaton","score":0.5804744362831116},{"id":"https://openalex.org/keywords/automaton","display_name":"Automaton","score":0.5582505464553833},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.47516506910324097},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.4503924250602722},{"id":"https://openalex.org/keywords/formal-language","display_name":"Formal language","score":0.42647719383239746},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3662682771682739},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.34464460611343384},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.29012808203697205},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2750783860683441}],"concepts":[{"id":"https://openalex.org/C146834321","wikidata":"https://www.wikidata.org/wiki/Q2979672","display_name":"Closure (psychology)","level":2,"score":0.8059097528457642},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7129279375076294},{"id":"https://openalex.org/C52370388","wikidata":"https://www.wikidata.org/wiki/Q752532","display_name":"Regular language","level":3,"score":0.5993935465812683},{"id":"https://openalex.org/C77944639","wikidata":"https://www.wikidata.org/wiki/Q751443","display_name":"Pushdown automaton","level":3,"score":0.5804744362831116},{"id":"https://openalex.org/C112505250","wikidata":"https://www.wikidata.org/wiki/Q787116","display_name":"Automaton","level":2,"score":0.5582505464553833},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.47516506910324097},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.4503924250602722},{"id":"https://openalex.org/C146072743","wikidata":"https://www.wikidata.org/wiki/Q192161","display_name":"Formal language","level":2,"score":0.42647719383239746},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3662682771682739},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.34464460611343384},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.29012808203697205},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2750783860683441},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C34447519","wikidata":"https://www.wikidata.org/wiki/Q179522","display_name":"Market economy","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/978-3-662-47666-6_35","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-662-47666-6_35","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Quality Education","score":0.5199999809265137,"id":"https://metadata.un.org/sdg/4"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":39,"referenced_works":["https://openalex.org/W22294440","https://openalex.org/W49167929","https://openalex.org/W116890255","https://openalex.org/W421997344","https://openalex.org/W818531939","https://openalex.org/W1503681652","https://openalex.org/W1515624550","https://openalex.org/W1589224558","https://openalex.org/W1766054560","https://openalex.org/W1955693250","https://openalex.org/W1973654289","https://openalex.org/W1987543317","https://openalex.org/W2002089154","https://openalex.org/W2015009579","https://openalex.org/W2023999667","https://openalex.org/W2038612549","https://openalex.org/W2048810975","https://openalex.org/W2050169407","https://openalex.org/W2053229198","https://openalex.org/W2062397400","https://openalex.org/W2067923908","https://openalex.org/W2075742699","https://openalex.org/W2086534829","https://openalex.org/W2089385274","https://openalex.org/W2093695603","https://openalex.org/W2094518278","https://openalex.org/W2113283923","https://openalex.org/W2116976042","https://openalex.org/W2128841330","https://openalex.org/W2160527279","https://openalex.org/W2245019596","https://openalex.org/W2259693994","https://openalex.org/W2363970847","https://openalex.org/W2442545619","https://openalex.org/W2949151425","https://openalex.org/W2964055444","https://openalex.org/W3098993010","https://openalex.org/W3099577127","https://openalex.org/W4302339081"],"related_works":["https://openalex.org/W2936871543","https://openalex.org/W1485033624","https://openalex.org/W2886027706","https://openalex.org/W2017318974","https://openalex.org/W2131290392","https://openalex.org/W2573882791","https://openalex.org/W2963981206","https://openalex.org/W2089148617","https://openalex.org/W2798603509","https://openalex.org/W1600278159"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":7},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":5},{"year":2015,"cited_by_count":4}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}