{"id":"https://openalex.org/W4226113116","doi":"https://doi.org/10.1093/jigpal/jzac044","title":"On semantically labelled syntax trees and the non-existence of certain Sahlqvist formulae","display_name":"On semantically labelled syntax trees and the non-existence of certain Sahlqvist formulae","publication_year":2022,"publication_date":"2022-04-14","ids":{"openalex":"https://openalex.org/W4226113116","doi":"https://doi.org/10.1093/jigpal/jzac044"},"language":"en","primary_location":{"id":"doi:10.1093/jigpal/jzac044","is_oa":false,"landing_page_url":"https://doi.org/10.1093/jigpal/jzac044","pdf_url":null,"source":{"id":"https://openalex.org/S2734381524","display_name":"Logic Journal of IGPL","issn_l":"1367-0751","issn":["1367-0751","1368-9894"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Logic Journal of the IGPL","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/A5045194736","display_name":"Petar Iliev","orcid":null},"institutions":[{"id":"https://openalex.org/I24768866","display_name":"Bulgarian Academy of Sciences","ror":"https://ror.org/01x8hew03","country_code":"BG","type":"government","lineage":["https://openalex.org/I24768866"]},{"id":"https://openalex.org/I4210105926","display_name":"Institute of Mathematics and Informatics","ror":"https://ror.org/01b5dy719","country_code":"BG","type":"facility","lineage":["https://openalex.org/I24768866","https://openalex.org/I4210105926"]},{"id":"https://openalex.org/I4210110320","display_name":"Institute of Philosophy and Sociology","ror":"https://ror.org/023t1e924","country_code":"BG","type":"facility","lineage":["https://openalex.org/I24768866","https://openalex.org/I4210110320"]}],"countries":["BG"],"is_corresponding":true,"raw_author_name":"Petar Iliev","raw_affiliation_strings":["Institute of Mathematics and Informatics , and Institute of Philosophy and Sociology, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Mathematics and Informatics , and Institute of Philosophy and Sociology, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria","institution_ids":["https://openalex.org/I4210105926","https://openalex.org/I24768866","https://openalex.org/I4210110320"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5045194736"],"corresponding_institution_ids":["https://openalex.org/I24768866","https://openalex.org/I4210105926","https://openalex.org/I4210110320"],"apc_list":{"value":4151,"currency":"USD","value_usd":4151},"apc_paid":null,"fwci":0.1387,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.5237416,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"31","issue":"3","first_page":"483","last_page":"509"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9952999949455261,"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"}},"topics":[{"id":"https://openalex.org/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9952999949455261,"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/T11727","display_name":"Advanced Algebra and Logic","score":0.9747999906539917,"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":0.9541000127792358,"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/syntax","display_name":"Syntax","score":0.7488530278205872},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.6264564990997314},{"id":"https://openalex.org/keywords/modal","display_name":"Modal","score":0.5902137756347656},{"id":"https://openalex.org/keywords/abstract-syntax","display_name":"Abstract syntax","score":0.5593351721763611},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5479618310928345},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.43119657039642334},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.19003751873970032}],"concepts":[{"id":"https://openalex.org/C60048249","wikidata":"https://www.wikidata.org/wiki/Q37437","display_name":"Syntax","level":2,"score":0.7488530278205872},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.6264564990997314},{"id":"https://openalex.org/C71139939","wikidata":"https://www.wikidata.org/wiki/Q910194","display_name":"Modal","level":2,"score":0.5902137756347656},{"id":"https://openalex.org/C114408938","wikidata":"https://www.wikidata.org/wiki/Q333373","display_name":"Abstract syntax","level":3,"score":0.5593351721763611},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5479618310928345},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.43119657039642334},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.19003751873970032},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C188027245","wikidata":"https://www.wikidata.org/wiki/Q750446","display_name":"Polymer chemistry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1093/jigpal/jzac044","is_oa":false,"landing_page_url":"https://doi.org/10.1093/jigpal/jzac044","pdf_url":null,"source":{"id":"https://openalex.org/S2734381524","display_name":"Logic Journal of IGPL","issn_l":"1367-0751","issn":["1367-0751","1368-9894"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Logic Journal of the IGPL","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W1527720545","https://openalex.org/W1995365759","https://openalex.org/W2048154108","https://openalex.org/W2094001511","https://openalex.org/W2099332935","https://openalex.org/W2111082593","https://openalex.org/W2175748456","https://openalex.org/W2339697109","https://openalex.org/W2399173794","https://openalex.org/W2749335491","https://openalex.org/W2963646327","https://openalex.org/W2996136717","https://openalex.org/W3114768102","https://openalex.org/W4251068495","https://openalex.org/W4300447480","https://openalex.org/W6610398787","https://openalex.org/W6636445471","https://openalex.org/W6679771319","https://openalex.org/W6704348348","https://openalex.org/W6713702496","https://openalex.org/W6760878036"],"related_works":["https://openalex.org/W2613250302","https://openalex.org/W1988370859","https://openalex.org/W319507398","https://openalex.org/W4294189394","https://openalex.org/W1523328199","https://openalex.org/W2077104824","https://openalex.org/W2399811286","https://openalex.org/W4319867150","https://openalex.org/W2005927140","https://openalex.org/W4206294449"],"abstract_inverted_index":{"Abstract":[0],"We":[1],"elaborate":[2],"on":[3],"semantically":[4],"labelled":[5],"syntax":[6],"trees":[7],"that":[8,35,42],"provide":[9],"a":[10,25],"method":[11],"of":[12,16,28,39],"proving":[13],"the":[14,52],"non-existence":[15],"modal":[17],"formulae":[18],"satisfying":[19],"certain":[20],"syntactic":[21],"properties":[22],"and":[23,30,48],"defining":[24],"given":[26],"class":[27],"frames":[29,41],"use":[31],"them":[32],"to":[33],"show":[34],"there":[36],"are":[37,43],"classes":[38],"Kripke":[40],"definable":[44],"by":[45],"both":[46],"non-Sahlqvist":[47],"Sahlqvist":[49],"formulae,":[50],"but":[51],"latter":[53],"requires":[54],"more":[55],"propositional":[56],"variables.":[57]},"counts_by_year":[{"year":2023,"cited_by_count":1}],"updated_date":"2026-05-21T06:26:12.895304","created_date":"2025-10-10T00:00:00"}