{"id":"https://openalex.org/W1593130485","doi":"https://doi.org/10.25596/jalc-1996-147","title":"Undecidability Results for Shuffle Languages","display_name":"Undecidability Results for Shuffle Languages","publication_year":1996,"publication_date":"1996-01-01","ids":{"openalex":"https://openalex.org/W1593130485","doi":"https://doi.org/10.25596/jalc-1996-147","mag":"1593130485"},"language":"en","primary_location":{"id":"doi:10.25596/jalc-1996-147","is_oa":true,"landing_page_url":"https://doi.org/10.25596/jalc-1996-147","pdf_url":null,"source":{"id":"https://openalex.org/S7407052944","display_name":"Justus-Liebig-Universit\u00e4t Gie\u00dfen","issn_l":null,"issn":[],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article-journal"},"type":"article","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.25596/jalc-1996-147","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5061712755","display_name":"Joanna J\u0119drzejowicz","orcid":"https://orcid.org/0000-0003-4979-5476"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"J\u0119drzejowicz, Joanna","raw_affiliation_strings":[],"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5061712755"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.07766069,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"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":0.9914000034332275,"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":0.9914000034332275,"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/T10181","display_name":"Natural Language Processing Techniques","score":0.9853000044822693,"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/T10142","display_name":"Formal Methods in Verification","score":0.9829000234603882,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6364718675613403},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.5855409502983093},{"id":"https://openalex.org/keywords/linguistics","display_name":"Linguistics","score":0.3753265142440796},{"id":"https://openalex.org/keywords/natural-language-processing","display_name":"Natural language processing","score":0.34574419260025024},{"id":"https://openalex.org/keywords/philosophy","display_name":"Philosophy","score":0.11955952644348145}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6364718675613403},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.5855409502983093},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.3753265142440796},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.34574419260025024},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.11955952644348145}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.25596/jalc-1996-147","is_oa":true,"landing_page_url":"https://doi.org/10.25596/jalc-1996-147","pdf_url":null,"source":{"id":"https://openalex.org/S7407052944","display_name":"Justus-Liebig-Universit\u00e4t Gie\u00dfen","issn_l":null,"issn":[],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article-journal"}],"best_oa_location":{"id":"doi:10.25596/jalc-1996-147","is_oa":true,"landing_page_url":"https://doi.org/10.25596/jalc-1996-147","pdf_url":null,"source":{"id":"https://openalex.org/S7407052944","display_name":"Justus-Liebig-Universit\u00e4t Gie\u00dfen","issn_l":null,"issn":[],"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article-journal"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2151033407","https://openalex.org/W2950107561"],"abstract_inverted_index":{"We":[0],"consider":[1],"shuffle":[2,16,21,26,58,74,78],"languages":[3,10,27,59],"which":[4],"are":[5],"an":[6],"extension":[7],"of":[8,25,32,48,77],"regular":[9],"with":[11,36],"two":[12,44],"operators,":[13],"that":[14,52,66],"is":[15,28,60,68],"(sometimes":[17],"called":[18],"interleaving)":[19],"and":[20,62],"closure.":[22],"The":[23],"class":[24,41],"a":[29],"proper":[30],"subset":[31],"context-sensitive":[33],"languages,":[34],"incomparable":[35],"context-free":[37],"ones.":[38],"For":[39],"this":[40],"we":[42,50,64],"give":[43],"undecidability":[45],"results.":[46],"First":[47],"all":[49],"show":[51],"the":[53,73],"intersection":[54],"emptiness":[55],"problem":[56],"for":[57],"undecidable":[61],"then":[63],"prove":[65],"there":[67],"no":[69],"algorithm":[70],"to":[71],"determine":[72],"closure":[75],"height":[76],"expressions.":[79]},"counts_by_year":[],"updated_date":"2025-11-06T06:51:31.235846","created_date":"2016-06-24T00:00:00"}
