{"id":"https://openalex.org/W1784039206","doi":"https://doi.org/10.1002/malq.19870330204","title":"Recursively Enumerable <i>L</i>\u2010Sets","display_name":"Recursively Enumerable <i>L</i>\u2010Sets","publication_year":1987,"publication_date":"1987-01-01","ids":{"openalex":"https://openalex.org/W1784039206","doi":"https://doi.org/10.1002/malq.19870330204","mag":"1784039206"},"language":"en","primary_location":{"id":"doi:10.1002/malq.19870330204","is_oa":false,"landing_page_url":"https://doi.org/10.1002/malq.19870330204","pdf_url":null,"source":{"id":"https://openalex.org/S172351290","display_name":"Mathematical logic quarterly","issn_l":"0942-5616","issn":["0942-5616","1521-3870"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Mathematical Logic Quarterly","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/A5070823915","display_name":"Loredana Biacino","orcid":null},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Loredana Biacino","raw_affiliation_strings":["Universita Di Napoli Istituto Di Matematica \u201cRenato Cacciopoli\u201d Via Mezzocannone, 8 Cap. 80134 Napoli Italy"],"affiliations":[{"raw_affiliation_string":"Universita Di Napoli Istituto Di Matematica \u201cRenato Cacciopoli\u201d Via Mezzocannone, 8 Cap. 80134 Napoli Italy","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041238111","display_name":"Giangiacomo Gerla","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Giangiacomo Gerla","raw_affiliation_strings":["Universita Di Napoli Istituto Di Matematica \u201cRenato Cacciopoli\u201d Via Mezzocannone, 8 Cap. 80134 Napoli Italy"],"affiliations":[{"raw_affiliation_string":"Universita Di Napoli Istituto Di Matematica \u201cRenato Cacciopoli\u201d Via Mezzocannone, 8 Cap. 80134 Napoli Italy","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5070823915"],"corresponding_institution_ids":[],"apc_list":{"value":2630,"currency":"USD","value_usd":2630},"apc_paid":null,"fwci":1.0314,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":{"value":0.71505005,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"33","issue":"2","first_page":"107","last_page":"113"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11727","display_name":"Advanced Algebra and Logic","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/T11727","display_name":"Advanced Algebra and Logic","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/T11671","display_name":"Fuzzy and Soft Set Theory","score":0.9991999864578247,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9976999759674072,"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/citation","display_name":"Citation","score":0.5052333474159241},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.4437386095523834},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.41316425800323486},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.38527417182922363},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3716692328453064},{"id":"https://openalex.org/keywords/humanities","display_name":"Humanities","score":0.36145150661468506},{"id":"https://openalex.org/keywords/calculus","display_name":"Calculus (dental)","score":0.3202069401741028},{"id":"https://openalex.org/keywords/library-science","display_name":"Library science","score":0.1553388237953186},{"id":"https://openalex.org/keywords/philosophy","display_name":"Philosophy","score":0.13415312767028809}],"concepts":[{"id":"https://openalex.org/C2778805511","wikidata":"https://www.wikidata.org/wiki/Q1713","display_name":"Citation","level":2,"score":0.5052333474159241},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.4437386095523834},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.41316425800323486},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.38527417182922363},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3716692328453064},{"id":"https://openalex.org/C15708023","wikidata":"https://www.wikidata.org/wiki/Q80083","display_name":"Humanities","level":1,"score":0.36145150661468506},{"id":"https://openalex.org/C2777686260","wikidata":"https://www.wikidata.org/wiki/Q144037","display_name":"Calculus (dental)","level":2,"score":0.3202069401741028},{"id":"https://openalex.org/C161191863","wikidata":"https://www.wikidata.org/wiki/Q199655","display_name":"Library science","level":1,"score":0.1553388237953186},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.13415312767028809},{"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}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1002/malq.19870330204","is_oa":false,"landing_page_url":"https://doi.org/10.1002/malq.19870330204","pdf_url":null,"source":{"id":"https://openalex.org/S172351290","display_name":"Mathematical logic quarterly","issn_l":"0942-5616","issn":["0942-5616","1521-3870"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Mathematical Logic Quarterly","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/4","score":0.5400000214576721,"display_name":"Quality Education"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W1966321785","https://openalex.org/W1981593041","https://openalex.org/W1990303257","https://openalex.org/W1994446950","https://openalex.org/W2040121225","https://openalex.org/W2054416947","https://openalex.org/W2060497501","https://openalex.org/W2530006810","https://openalex.org/W2905135108","https://openalex.org/W4211007335","https://openalex.org/W4249849247","https://openalex.org/W6641832886","https://openalex.org/W6645894613"],"related_works":["https://openalex.org/W1979597421","https://openalex.org/W2007980826","https://openalex.org/W4245490552","https://openalex.org/W4225152035","https://openalex.org/W2061531152","https://openalex.org/W3002753104","https://openalex.org/W2077600819","https://openalex.org/W1587224694","https://openalex.org/W2911598644","https://openalex.org/W2042127053"],"abstract_inverted_index":null,"counts_by_year":[{"year":2017,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}