{"id":"https://openalex.org/W1987010753","doi":"https://doi.org/10.1016/0304-3975(81)90028-1","title":"On the subword complexity of square-free DOL languages","display_name":"On the subword complexity of square-free DOL languages","publication_year":1981,"publication_date":"1981-01-01","ids":{"openalex":"https://openalex.org/W1987010753","doi":"https://doi.org/10.1016/0304-3975(81)90028-1","mag":"1987010753"},"language":"en","primary_location":{"id":"doi:10.1016/0304-3975(81)90028-1","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(81)90028-1","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/A5045244980","display_name":"Andrzej Ehrenfeucht","orcid":null},"institutions":[{"id":"https://openalex.org/I188538660","display_name":"University of Colorado Boulder","ror":"https://ror.org/02ttsq026","country_code":"US","type":"education","lineage":["https://openalex.org/I188538660"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"A. Ehrenfeucht","raw_affiliation_strings":["Department of Computer Science, University of Colorado, Boulder, CO, U.S.A","[Dept. of Computer Science, University of Colorado Boulder, CO, U.S.A.]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Colorado, Boulder, CO, U.S.A","institution_ids":["https://openalex.org/I188538660"]},{"raw_affiliation_string":"[Dept. of Computer Science, University of Colorado Boulder, CO, U.S.A.]","institution_ids":["https://openalex.org/I188538660"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5108424274","display_name":"G. Rozenberg","orcid":null},"institutions":[{"id":"https://openalex.org/I121797337","display_name":"Leiden University","ror":"https://ror.org/027bh9e22","country_code":"NL","type":"education","lineage":["https://openalex.org/I121797337"]},{"id":"https://openalex.org/I210716285","display_name":"University of Applied Sciences Leiden","ror":"https://ror.org/0093src13","country_code":"NL","type":"education","lineage":["https://openalex.org/I210716285"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"G. Rozenberg","raw_affiliation_strings":["Institute of Applied Mathematics and Computer Science, University of Leiden, Leiden, The Netherlands","Institute of Applied Mathematics and Computer Science, University of Leiden, Leiden The Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Applied Mathematics and Computer Science, University of Leiden, Leiden, The Netherlands","institution_ids":["https://openalex.org/I210716285"]},{"raw_affiliation_string":"Institute of Applied Mathematics and Computer Science, University of Leiden, Leiden The Netherlands","institution_ids":["https://openalex.org/I121797337"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2600,"currency":"USD","value_usd":2600},"apc_paid":null,"fwci":7.7918,"has_fulltext":false,"cited_by_count":38,"citation_normalized_percentile":{"value":0.9788444,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"16","issue":"1","first_page":"25","last_page":"32"},"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/T11269","display_name":"Algorithms and Data Compression","score":0.9973999857902527,"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/T12029","display_name":"DNA and Biological Computing","score":0.9965999722480774,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/square","display_name":"Square (algebra)","score":0.7025045156478882},{"id":"https://openalex.org/keywords/word","display_name":"Word (group theory)","score":0.68623286485672},{"id":"https://openalex.org/keywords/square-free-integer","display_name":"Square-free integer","score":0.6034483313560486},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.5577498078346252},{"id":"https://openalex.org/keywords/upper-and-lower-bounds","display_name":"Upper and lower bounds","score":0.5575975775718689},{"id":"https://openalex.org/keywords/integer","display_name":"Integer (computer science)","score":0.5541889071464539},{"id":"https://openalex.org/keywords/function","display_name":"Function (biology)","score":0.5507912039756775},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.5055029392242432},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4528454542160034},{"id":"https://openalex.org/keywords/arithmetic","display_name":"Arithmetic","score":0.424408495426178},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3306286334991455},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.052281856536865234}],"concepts":[{"id":"https://openalex.org/C135692309","wikidata":"https://www.wikidata.org/wiki/Q111124","display_name":"Square (algebra)","level":2,"score":0.7025045156478882},{"id":"https://openalex.org/C90805587","wikidata":"https://www.wikidata.org/wiki/Q10944557","display_name":"Word (group theory)","level":2,"score":0.68623286485672},{"id":"https://openalex.org/C188139237","wikidata":"https://www.wikidata.org/wiki/Q50706","display_name":"Square-free integer","level":2,"score":0.6034483313560486},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5577498078346252},{"id":"https://openalex.org/C77553402","wikidata":"https://www.wikidata.org/wiki/Q13222579","display_name":"Upper and lower bounds","level":2,"score":0.5575975775718689},{"id":"https://openalex.org/C97137487","wikidata":"https://www.wikidata.org/wiki/Q729138","display_name":"Integer (computer science)","level":2,"score":0.5541889071464539},{"id":"https://openalex.org/C14036430","wikidata":"https://www.wikidata.org/wiki/Q3736076","display_name":"Function (biology)","level":2,"score":0.5507912039756775},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.5055029392242432},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4528454542160034},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.424408495426178},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3306286334991455},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.052281856536865234},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C78458016","wikidata":"https://www.wikidata.org/wiki/Q840400","display_name":"Evolutionary biology","level":1,"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:10.1016/0304-3975(81)90028-1","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(81)90028-1","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":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W136207540","https://openalex.org/W197556433","https://openalex.org/W1485536627","https://openalex.org/W1535681052","https://openalex.org/W1859552527","https://openalex.org/W2005768337","https://openalex.org/W2043194137","https://openalex.org/W2045776242","https://openalex.org/W2188913344","https://openalex.org/W3161804283","https://openalex.org/W4285719527","https://openalex.org/W6605537756","https://openalex.org/W6608003775","https://openalex.org/W6629108688"],"related_works":["https://openalex.org/W4362598163","https://openalex.org/W2962942023","https://openalex.org/W4299354961","https://openalex.org/W4287629074","https://openalex.org/W3095434007","https://openalex.org/W2147745837","https://openalex.org/W2388658714","https://openalex.org/W4220736324","https://openalex.org/W2378373267","https://openalex.org/W3155407717"],"abstract_inverted_index":null,"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-07-23T08:03:31.855105","created_date":"2025-10-10T00:00:00"}
