{"id":"https://openalex.org/W3024362386","doi":"https://doi.org/10.46298/lmcs-21(1:13)2025","title":"Bisimilarity in fresh-register automata","display_name":"Bisimilarity in fresh-register automata","publication_year":2025,"publication_date":"2025-02-06","ids":{"openalex":"https://openalex.org/W3024362386","doi":"https://doi.org/10.46298/lmcs-21(1:13)2025","mag":"3024362386"},"language":"en","primary_location":{"id":"doi:10.46298/lmcs-21(1:13)2025","is_oa":true,"landing_page_url":"https://doi.org/10.46298/lmcs-21(1:13)2025","pdf_url":"https://lmcs.episciences.org/15200/pdf","source":{"id":"https://openalex.org/S114379355","display_name":"Logical Methods in Computer Science","issn_l":"1860-5974","issn":["1860-5974"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310313916","host_organization_name":"Logical Methods in Computer Science e.V.","host_organization_lineage":["https://openalex.org/P4310313916"],"host_organization_lineage_names":["Logical Methods in Computer Science e.V."],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Logical Methods in Computer Science","raw_type":"journal-article"},"type":"article","indexed_in":["arxiv","crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://lmcs.episciences.org/15200/pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5000119795","display_name":"Andrzej S. Murawski","orcid":"https://orcid.org/0000-0002-4725-410X"},"institutions":[{"id":"https://openalex.org/I39555362","display_name":"University of Warwick","ror":"https://ror.org/01a77tt86","country_code":"GB","type":"education","lineage":["https://openalex.org/I39555362"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Andrzej S. Murawski","raw_affiliation_strings":["University of Warwick"],"affiliations":[{"raw_affiliation_string":"University of Warwick","institution_ids":["https://openalex.org/I39555362"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035196790","display_name":"Steven Ramsay","orcid":"https://orcid.org/0000-0002-0825-8386"},"institutions":[{"id":"https://openalex.org/I39555362","display_name":"University of Warwick","ror":"https://ror.org/01a77tt86","country_code":"GB","type":"education","lineage":["https://openalex.org/I39555362"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Steven J. Ramsay","raw_affiliation_strings":["University of Warwick"],"affiliations":[{"raw_affiliation_string":"University of Warwick","institution_ids":["https://openalex.org/I39555362"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041266426","display_name":"Nikos Tzevelekos","orcid":"https://orcid.org/0000-0001-8509-8059"},"institutions":[{"id":"https://openalex.org/I166337079","display_name":"Queen Mary University of London","ror":"https://ror.org/026zzn846","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I166337079"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Nikos Tzevelekos","raw_affiliation_strings":["queen mary university of london"],"affiliations":[{"raw_affiliation_string":"queen mary university of london","institution_ids":["https://openalex.org/I166337079"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5000119795"],"corresponding_institution_ids":["https://openalex.org/I39555362"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.00081693,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"Volume 21, Issue 1","issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9998999834060669,"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":0.9998999834060669,"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/T10142","display_name":"Formal Methods in Verification","score":0.9995999932289124,"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":0.9977999925613403,"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/register","display_name":"Register (sociolinguistics)","score":0.8324074745178223},{"id":"https://openalex.org/keywords/automaton","display_name":"Automaton","score":0.603023111820221},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5519864559173584},{"id":"https://openalex.org/keywords/arithmetic","display_name":"Arithmetic","score":0.3664013147354126},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.33130669593811035},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.301216721534729},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.19991761445999146},{"id":"https://openalex.org/keywords/philosophy","display_name":"Philosophy","score":0.08404210209846497},{"id":"https://openalex.org/keywords/linguistics","display_name":"Linguistics","score":0.07225620746612549}],"concepts":[{"id":"https://openalex.org/C2779235478","wikidata":"https://www.wikidata.org/wiki/Q286576","display_name":"Register (sociolinguistics)","level":2,"score":0.8324074745178223},{"id":"https://openalex.org/C112505250","wikidata":"https://www.wikidata.org/wiki/Q787116","display_name":"Automaton","level":2,"score":0.603023111820221},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5519864559173584},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.3664013147354126},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.33130669593811035},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.301216721534729},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.19991761445999146},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.08404210209846497},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.07225620746612549}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.46298/lmcs-21(1:13)2025","is_oa":true,"landing_page_url":"https://doi.org/10.46298/lmcs-21(1:13)2025","pdf_url":"https://lmcs.episciences.org/15200/pdf","source":{"id":"https://openalex.org/S114379355","display_name":"Logical Methods in Computer Science","issn_l":"1860-5974","issn":["1860-5974"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310313916","host_organization_name":"Logical Methods in Computer Science e.V.","host_organization_lineage":["https://openalex.org/P4310313916"],"host_organization_lineage_names":["Logical Methods in Computer Science e.V."],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Logical Methods in Computer Science","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:2005.06411","is_oa":true,"landing_page_url":"http://arxiv.org/abs/2005.06411","pdf_url":"https://arxiv.org/pdf/2005.06411","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"pmh:oai:doaj.org/article:2446b203fac84e53871c7ceb8690763e","is_oa":true,"landing_page_url":"https://doaj.org/article/2446b203fac84e53871c7ceb8690763e","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Logical Methods in Computer Science, Vol Volume 21, Issue 1 (2025)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.46298/lmcs-21(1:13)2025","is_oa":true,"landing_page_url":"https://doi.org/10.46298/lmcs-21(1:13)2025","pdf_url":"https://lmcs.episciences.org/15200/pdf","source":{"id":"https://openalex.org/S114379355","display_name":"Logical Methods in Computer Science","issn_l":"1860-5974","issn":["1860-5974"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310313916","host_organization_name":"Logical Methods in Computer Science e.V.","host_organization_lineage":["https://openalex.org/P4310313916"],"host_organization_lineage_names":["Logical Methods in Computer Science e.V."],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Logical Methods in Computer Science","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.6899999976158142,"id":"https://metadata.un.org/sdg/4","display_name":"Quality Education"}],"awards":[{"id":"https://openalex.org/G2389703515","display_name":"Game Semantics for Java Programs","funder_award_id":"EP/J019577/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G2535402114","display_name":null,"funder_award_id":"10216/111","funder_id":"https://openalex.org/F4320320005","funder_display_name":"Royal Academy of Engineering"},{"id":"https://openalex.org/G4040309095","display_name":"Program Reasoning with Nominal Game Semantics","funder_award_id":"EP/L022478/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"}],"funders":[{"id":"https://openalex.org/F4320320005","display_name":"Royal Academy of Engineering","ror":"https://ror.org/0526snb40"},{"id":"https://openalex.org/F4320334627","display_name":"Engineering and Physical Sciences Research Council","ror":"https://ror.org/0439y7842"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3024362386.pdf","grobid_xml":"https://content.openalex.org/works/W3024362386.grobid-xml"},"referenced_works_count":25,"referenced_works":["https://openalex.org/W1542510688","https://openalex.org/W1572727431","https://openalex.org/W1587163902","https://openalex.org/W1795569145","https://openalex.org/W1891022440","https://openalex.org/W1975016340","https://openalex.org/W1989743096","https://openalex.org/W1997387389","https://openalex.org/W1998608869","https://openalex.org/W2001214919","https://openalex.org/W2039529128","https://openalex.org/W2043190445","https://openalex.org/W2056665285","https://openalex.org/W2064514470","https://openalex.org/W2081396910","https://openalex.org/W2096202696","https://openalex.org/W2125647096","https://openalex.org/W2139569497","https://openalex.org/W2151033407","https://openalex.org/W2177814128","https://openalex.org/W2301770945","https://openalex.org/W2889196489","https://openalex.org/W2951623158","https://openalex.org/W3021321801","https://openalex.org/W3103813054"],"related_works":["https://openalex.org/W4312941541","https://openalex.org/W2361019053","https://openalex.org/W2071125430","https://openalex.org/W624979004","https://openalex.org/W4238987864","https://openalex.org/W4232669059","https://openalex.org/W2064119831","https://openalex.org/W1606827233","https://openalex.org/W2224948060","https://openalex.org/W2124122503"],"abstract_inverted_index":{"Register":[0],"automata":[1,12,15],"are":[2,67],"a":[3,115,127,183],"basic":[4],"model":[5,26],"of":[6,37,43,93,121,131,174,189,210,223,233],"computation":[7],"over":[8],"infinite":[9],"alphabets.":[10],"Fresh-register":[11],"extend":[13],"register":[14,44,60,65,159,191],"with":[16],"the":[17,35,38,57,80,86,91,105,119,132,156,171,175,200,218,221,231],"capability":[18],"to":[19,25,100,113,181],"generate":[20],"fresh":[21],"symbols":[22],"in":[23,56,73,96,150,217,230],"order":[24],"computational":[27,142],"scenarios":[28],"involving":[29],"name":[30],"creation.":[31],"This":[32],"paper":[33],"investigates":[34],"complexity":[36,172,184],"bisimilarity":[39,227],"problem":[40,87],"for":[41,155,186,199],"classes":[42],"and":[45,69,141,152],"fresh-register":[46],"automata.":[47,192],"We":[48,193],"examine":[49],"all":[50],"main":[51],"disciplines":[52],"that":[53,85,166,195],"have":[54],"appeared":[55],"literature:":[58],"general":[59,81],"assignments;":[61],"assignments":[62,70],"where":[63],"duplicate":[64,94],"values":[66,95],"disallowed;":[68],"without":[71],"duplicates":[72],"which":[74,109,205],"registers":[75,97],"cannot":[76],"be":[77,111],"empty.":[78],"In":[79,161],"case,":[82,163,220],"we":[83,145,164,213],"show":[84,148,194],"is":[88,203],"EXPTIME-complete.":[89],"However,":[90],"absence":[92],"enables":[98],"us":[99,180],"identify":[101],"inherent":[102],"symmetries":[103],"inside":[104],"associated":[106],"bisimulation":[107],"relations,":[108],"can":[110,146],"used":[112],"establish":[114],"polynomial":[116],"bound":[117],"on":[118],"depth":[120],"Attacker-winning":[122],"strategies.":[123],"Furthermore,":[124],"they":[125],"enable":[126],"highly":[128],"succinct":[129],"representation":[130],"corresponding":[133],"bisimulations.":[134],"By":[135],"exploiting":[136],"results":[137,178],"from":[138],"group":[139,143],"theory":[140],"theory,":[144],"then":[147],"solvability":[149],"PSPACE":[151],"NP":[153],"respectively":[154],"latter":[157],"two":[158],"disciplines.":[160],"each":[162],"find":[165],"freshness":[167],"does":[168],"not":[169],"affect":[170],"class":[173],"problem.":[176],"The":[177],"allow":[179],"close":[182],"gap":[185],"language":[187,197],"equivalence":[188],"deterministic":[190,196],"inequivalence":[198],"no-duplicates":[201],"fragment":[202],"NP-complete,":[204],"disproves":[206],"an":[207],"old":[208],"conjecture":[209],"Sakamoto.":[211],"Finally,":[212],"discover":[214],"that,":[215],"unlike":[216],"finite-alphabet":[219],"addition":[222],"pushdown":[224,235],"store":[225],"makes":[226],"undecidable,":[228],"even":[229],"case":[232],"visibly":[234],"storage.":[236]},"counts_by_year":[],"updated_date":"2026-04-10T15:06:20.359241","created_date":"2025-10-10T00:00:00"}
