{"id":"https://openalex.org/W2477770273","doi":"https://doi.org/10.1142/9789814447133_0013","title":"Aperiodic Languages and Generalizations","display_name":"Aperiodic Languages and Generalizations","publication_year":1994,"publication_date":"1994-10-01","ids":{"openalex":"https://openalex.org/W2477770273","doi":"https://doi.org/10.1142/9789814447133_0013","mag":"2477770273"},"language":"en","primary_location":{"id":"doi:10.1142/9789814447133_0013","is_oa":false,"landing_page_url":"https://doi.org/10.1142/9789814447133_0013","pdf_url":null,"source":{"id":"https://openalex.org/S4306464320","display_name":"WORLD SCIENTIFIC eBooks","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"ebook platform"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Mathematical Aspects of Natural and Formal Languages","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/A5041517753","display_name":"Lila Kari","orcid":"https://orcid.org/0000-0001-5700-5353"},"institutions":[{"id":"https://openalex.org/I125749732","display_name":"Western University","ror":"https://ror.org/02grkyz14","country_code":"CA","type":"education","lineage":["https://openalex.org/I125749732"]}],"countries":["CA"],"is_corresponding":true,"raw_author_name":"Lila KARI","raw_affiliation_strings":["Department of Mathematics, University of Western Ontario, London, Ontario, N6A 5B7, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Mathematics, University of Western Ontario, London, Ontario, N6A 5B7, Canada","institution_ids":["https://openalex.org/I125749732"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5015439618","display_name":"G. Thierrin","orcid":null},"institutions":[{"id":"https://openalex.org/I125749732","display_name":"Western University","ror":"https://ror.org/02grkyz14","country_code":"CA","type":"education","lineage":["https://openalex.org/I125749732"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Gabriel THIERRIN","raw_affiliation_strings":["Department of Mathematics, University of Western Ontario, London, Ontario, N6A 5B7, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Mathematics, University of Western Ontario, London, Ontario, N6A 5B7, Canada","institution_ids":["https://openalex.org/I125749732"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5041517753"],"corresponding_institution_ids":["https://openalex.org/I125749732"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.28815313,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"233","last_page":"243"},"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/T12002","display_name":"Computability, Logic, AI Algorithms","score":0.994700014591217,"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/T11727","display_name":"Advanced Algebra and Logic","score":0.9918000102043152,"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/aperiodic-graph","display_name":"Aperiodic graph","score":0.9400826692581177},{"id":"https://openalex.org/keywords/linguistics","display_name":"Linguistics","score":0.43276113271713257},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.39790573716163635},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.34822964668273926},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3318501114845276},{"id":"https://openalex.org/keywords/philosophy","display_name":"Philosophy","score":0.23378631472587585},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.13139018416404724}],"concepts":[{"id":"https://openalex.org/C104247578","wikidata":"https://www.wikidata.org/wiki/Q4779368","display_name":"Aperiodic graph","level":2,"score":0.9400826692581177},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.43276113271713257},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.39790573716163635},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.34822964668273926},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3318501114845276},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.23378631472587585},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.13139018416404724}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1142/9789814447133_0013","is_oa":false,"landing_page_url":"https://doi.org/10.1142/9789814447133_0013","pdf_url":null,"source":{"id":"https://openalex.org/S4306464320","display_name":"WORLD SCIENTIFIC eBooks","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"ebook platform"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Mathematical Aspects of Natural and Formal Languages","raw_type":"book-chapter"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.297.4849","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.297.4849","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.csd.uwo.ca/faculty/lila/pdfs/Aperiodic languages and generalizations.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6200000047683716,"id":"https://metadata.un.org/sdg/4","display_name":"Quality Education"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W587223573","https://openalex.org/W1510695256","https://openalex.org/W1523977407","https://openalex.org/W1533648993","https://openalex.org/W1537087449","https://openalex.org/W1995387379","https://openalex.org/W2043194137"],"related_works":["https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2037661079","https://openalex.org/W2339191433","https://openalex.org/W1992569127","https://openalex.org/W4220811941","https://openalex.org/W4298800952","https://openalex.org/W2039582600","https://openalex.org/W4287817191","https://openalex.org/W2912635236"],"abstract_inverted_index":{"For":[0],"every":[1],"integer":[2],"k\u22650,":[3],"a":[4,42],"class":[5,16],"of":[6,17,21,37,41],"languages,":[7,11],"called":[8],"k-":[9],"aperiodic":[10,18],"is":[12,45],"defined,":[13],"generalizing":[14],"the":[15,28,38],"languages.":[19],"Properties":[20],"these":[22],"classes":[23],"are":[24,33],"investigated,":[25],"in":[26],"particular":[27],"operations":[29],"under":[30],"which":[31],"they":[32],"preserved.":[34],"A":[35],"characterization":[36],"syntactic":[39],"monoid":[40],"k-aperiodic":[43],"language":[44],"also":[46],"obtained.":[47]},"counts_by_year":[],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}