{"id":"https://openalex.org/W2908208955","doi":"https://doi.org/10.29007/m8ts","title":"The Triguarded Fragment of First-Order Logic","display_name":"The Triguarded Fragment of First-Order Logic","publication_year":2018,"publication_date":"2018-10-23","ids":{"openalex":"https://openalex.org/W2908208955","doi":"https://doi.org/10.29007/m8ts","mag":"2908208955"},"language":"en","primary_location":{"id":"doi:10.29007/m8ts","is_oa":true,"landing_page_url":"https://doi.org/10.29007/m8ts","pdf_url":"https://easychair.org/publications/open/wlJ3","source":{"id":"https://openalex.org/S4220651395","display_name":"EPiC series in computing","issn_l":"2398-7340","issn":["2398-7340"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EPiC Series in Computing","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://easychair.org/publications/open/wlJ3","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5024774718","display_name":"Sebastian Rudolph","orcid":"https://orcid.org/0000-0002-1609-2080"},"institutions":[{"id":"https://openalex.org/I78650965","display_name":"TU Dresden","ror":"https://ror.org/042aqky30","country_code":"DE","type":"education","lineage":["https://openalex.org/I78650965"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Sebastian Rudolph","raw_affiliation_strings":["Computational Logic Group, TU Dresden, Germany"],"affiliations":[{"raw_affiliation_string":"Computational Logic Group, TU Dresden, Germany","institution_ids":["https://openalex.org/I78650965"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079813467","display_name":"Mantas \u0160imkus","orcid":"https://orcid.org/0000-0003-0632-0294"},"institutions":[{"id":"https://openalex.org/I145847075","display_name":"TU Wien","ror":"https://ror.org/04d836q62","country_code":"AT","type":"education","lineage":["https://openalex.org/I145847075"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Mantas Simkus","raw_affiliation_strings":["Institute of Logic and Computation, TU Wien, Austria"],"affiliations":[{"raw_affiliation_string":"Institute of Logic and Computation, TU Wien, Austria","institution_ids":["https://openalex.org/I145847075"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5024774718"],"corresponding_institution_ids":["https://openalex.org/I78650965"],"apc_list":null,"apc_paid":null,"fwci":0.5077,"has_fulltext":true,"cited_by_count":6,"citation_normalized_percentile":{"value":0.75341906,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"57","issue":null,"first_page":"604","last_page":"587"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9997000098228455,"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":0.9997000098228455,"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/T10126","display_name":"Logic, programming, and type systems","score":0.9980999827384949,"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/T10215","display_name":"Semantic Web and Ontologies","score":0.9979000091552734,"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/fragment","display_name":"Fragment (logic)","score":0.963236927986145},{"id":"https://openalex.org/keywords/decidability","display_name":"Decidability","score":0.767289936542511},{"id":"https://openalex.org/keywords/arity","display_name":"Arity","score":0.6624747514724731},{"id":"https://openalex.org/keywords/satisfiability","display_name":"Satisfiability","score":0.5666558146476746},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.5408499836921692},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.49059954285621643},{"id":"https://openalex.org/keywords/description-logic","display_name":"Description logic","score":0.46337902545928955},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4035535454750061},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3848884403705597},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2997559905052185},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.29043933749198914}],"concepts":[{"id":"https://openalex.org/C2776235265","wikidata":"https://www.wikidata.org/wiki/Q18392052","display_name":"Fragment (logic)","level":2,"score":0.963236927986145},{"id":"https://openalex.org/C153269930","wikidata":"https://www.wikidata.org/wiki/Q430001","display_name":"Decidability","level":2,"score":0.767289936542511},{"id":"https://openalex.org/C110546421","wikidata":"https://www.wikidata.org/wiki/Q1315869","display_name":"Arity","level":2,"score":0.6624747514724731},{"id":"https://openalex.org/C168773769","wikidata":"https://www.wikidata.org/wiki/Q1350299","display_name":"Satisfiability","level":2,"score":0.5666558146476746},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.5408499836921692},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.49059954285621643},{"id":"https://openalex.org/C102993220","wikidata":"https://www.wikidata.org/wiki/Q387196","display_name":"Description logic","level":2,"score":0.46337902545928955},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4035535454750061},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3848884403705597},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2997559905052185},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.29043933749198914},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.29007/m8ts","is_oa":true,"landing_page_url":"https://doi.org/10.29007/m8ts","pdf_url":"https://easychair.org/publications/open/wlJ3","source":{"id":"https://openalex.org/S4220651395","display_name":"EPiC series in computing","issn_l":"2398-7340","issn":["2398-7340"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EPiC Series in Computing","raw_type":"proceedings-article"}],"best_oa_location":{"id":"doi:10.29007/m8ts","is_oa":true,"landing_page_url":"https://doi.org/10.29007/m8ts","pdf_url":"https://easychair.org/publications/open/wlJ3","source":{"id":"https://openalex.org/S4220651395","display_name":"EPiC series in computing","issn_l":"2398-7340","issn":["2398-7340"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"EPiC Series in Computing","raw_type":"proceedings-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","score":0.6399999856948853,"display_name":"Peace, Justice and strong institutions"}],"awards":[{"id":"https://openalex.org/G3150821489","display_name":"A Grand Unified Theory of Decidability in Logic-Based Knowledge Representation","funder_award_id":"771779","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G4956428346","display_name":null,"funder_award_id":"Horizon 2020 research and innovatio","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G5036817778","display_name":null,"funder_award_id":"European Union's Horizon 2020 research and innov","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G8188452139","display_name":null,"funder_award_id":"P30360","funder_id":"https://openalex.org/F4320321181","funder_display_name":"Austrian Science Fund"},{"id":"https://openalex.org/G8318064016","display_name":null,"funder_award_id":"Horizon","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G8633428685","display_name":null,"funder_award_id":"European Union's Horizon 2020 research and innovat","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G8768587252","display_name":null,"funder_award_id":"P30873","funder_id":"https://openalex.org/F4320321181","funder_display_name":"Austrian Science Fund"}],"funders":[{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"},{"id":"https://openalex.org/F4320321181","display_name":"Austrian Science Fund","ror":"https://ror.org/013tf3c58"},{"id":"https://openalex.org/F4320322839","display_name":"Technische Universit\u00e4t Wien","ror":"https://ror.org/04d836q62"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2908208955.pdf","grobid_xml":"https://content.openalex.org/works/W2908208955.grobid-xml"},"referenced_works_count":20,"referenced_works":["https://openalex.org/W143925898","https://openalex.org/W150929276","https://openalex.org/W1483892218","https://openalex.org/W1490430258","https://openalex.org/W1532158393","https://openalex.org/W1549008998","https://openalex.org/W1759871617","https://openalex.org/W1991981864","https://openalex.org/W1997817571","https://openalex.org/W1998044200","https://openalex.org/W1999607653","https://openalex.org/W2086015611","https://openalex.org/W2086470346","https://openalex.org/W2115600083","https://openalex.org/W2123817118","https://openalex.org/W2124580444","https://openalex.org/W2294895589","https://openalex.org/W2740094155","https://openalex.org/W3146347964","https://openalex.org/W4244275182"],"related_works":["https://openalex.org/W2752930545","https://openalex.org/W2040430117","https://openalex.org/W2294297515","https://openalex.org/W2585890227","https://openalex.org/W1543051890","https://openalex.org/W2072122432","https://openalex.org/W1576014289","https://openalex.org/W2789140669","https://openalex.org/W2166108892","https://openalex.org/W2120921192"],"abstract_inverted_index":{"Past":[0],"research":[1],"into":[2,35],"decidable":[3],"fragments":[4,25],"of":[5,27,40,102,125,140,151,162,167],"first-order":[6],"logic":[7],"(FO)":[8],"has":[9],"produced":[10],"two":[11],"very":[12],"prominent":[13],"fragments:":[14],"the":[15,20,90,99,123,138,149,165],"guarded":[16,109],"fragment":[17,22,82,92],"GF,":[18],"and":[19,38,48,63,76,78,153],"two-variable":[21],"FO2.":[23],"These":[24],"are":[26],"crucial":[28],"importance":[29],"because":[30],"they":[31],"provide":[32],"significant":[33],"insights":[34],"decidabil-":[36],"ity":[37],"expressiveness":[39],"other":[41,64],"(computational)":[42],"logics":[43],"like":[44],"Modal":[45],"Logics":[46,51],"(MLs)":[47],"various":[49],"Description":[50],"(DLs),":[52],"which":[53],"play":[54],"a":[55,71,80,143],"central":[56],"role":[57],"in":[58,122,128,148],"Verification,":[59],"Knowledge":[60],"Represen-":[61],"tation,":[62],"areas.":[65],"In":[66],"this":[67],"paper,":[68],"we":[69,136,156],"take":[70],"closer":[72],"look":[73],"at":[74],"GF":[75],"FO2,":[77],"present":[79],"new":[81],"that":[83,158],"subsumes":[84],"them":[85],"both.":[86],"This":[87],"fragment,":[88],"called":[89],"triguarded":[91],"(denoted":[93],"TGF),":[94],"is":[95,105,130],"obtained":[96],"by":[97,142],"relaxing":[98],"standard":[100],"definition":[101],"GF:":[103],"quantification":[104],"required":[106],"to":[107,170],"be":[108],"only":[110],"for":[111],"subformulae":[112],"with":[113],"three":[114],"or":[115],"more":[116],"free":[117],"variables.":[118],"We":[119],"show":[120],"that,":[121],"absence":[124],"equality,":[126,168],"satisfiability":[127],"TGF":[129],"N2ExpTime-complete,":[131],"but":[132],"becomes":[133],"NExpTime-complete":[134],"if":[135],"bound":[137],"arity":[139],"predicates":[141],"constant":[144],"(a":[145],"natural":[146,160],"assumption":[147],"context":[150],"MLs":[152],"DLs).":[154],"Finally,":[155],"observe":[157],"many":[159],"extensions":[161],"TGF,":[163],"including":[164],"addition":[166],"lead":[169],"undecidability.":[171]},"counts_by_year":[{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":1}],"updated_date":"2026-04-13T07:58:08.660418","created_date":"2025-10-10T00:00:00"}
