{"id":"https://openalex.org/W1975572112","doi":"https://doi.org/10.1007/s002360050129","title":"Nonfinite axiomatizability of the equational theory of shuffle","display_name":"Nonfinite axiomatizability of the equational theory of shuffle","publication_year":1998,"publication_date":"1998-06-01","ids":{"openalex":"https://openalex.org/W1975572112","doi":"https://doi.org/10.1007/s002360050129","mag":"1975572112"},"language":"en","primary_location":{"id":"doi:10.1007/s002360050129","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s002360050129","pdf_url":null,"source":{"id":"https://openalex.org/S84409463","display_name":"Acta Informatica","issn_l":"0001-5903","issn":["0001-5903","1432-0525"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Acta Informatica","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/A5017293831","display_name":"Zolt\u00e1n \u00c9sik","orcid":null},"institutions":[{"id":"https://openalex.org/I227486990","display_name":"University of Szeged","ror":"https://ror.org/01pnej532","country_code":"HU","type":"education","lineage":["https://openalex.org/I227486990"]},{"id":"https://openalex.org/I4210111519","display_name":"E\u00f6tv\u00f6s J\u00f3zsef F\u0151iskola","ror":"https://ror.org/01v8tze95","country_code":"HU","type":"education","lineage":["https://openalex.org/I4210111519"]}],"countries":["HU"],"is_corresponding":true,"raw_author_name":"Zolt\u00e1n \u00c9sik","raw_affiliation_strings":["A. J\u00f3zsef University, Department of Computer Science, Szeged, Hungary (e-mail: esik@inf.u-szeged.hu)\n, , , , , , HU","A. J\u00f3zsef University, Department of Computer Science, Szeged, Hungary (e-mail: esik@inf.u-szeged.hu)#N#, , HU"],"affiliations":[{"raw_affiliation_string":"A. J\u00f3zsef University, Department of Computer Science, Szeged, Hungary (e-mail: esik@inf.u-szeged.hu)\n, , , , , , HU","institution_ids":["https://openalex.org/I227486990"]},{"raw_affiliation_string":"A. J\u00f3zsef University, Department of Computer Science, Szeged, Hungary (e-mail: esik@inf.u-szeged.hu)#N#, , HU","institution_ids":["https://openalex.org/I4210111519"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5080299964","display_name":"Michael Bertol","orcid":null},"institutions":[{"id":"https://openalex.org/I100066346","display_name":"University of Stuttgart","ror":"https://ror.org/04vnq7t77","country_code":"DE","type":"education","lineage":["https://openalex.org/I100066346"]},{"id":"https://openalex.org/I31582689","display_name":"Stuttgart University of Applied Sciences","ror":"https://ror.org/039gdg280","country_code":"DE","type":"education","lineage":["https://openalex.org/I31582689"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Michael Bertol","raw_affiliation_strings":["University of Stuttgart, Department of Computer Science, Stuttgart, Germany (e-mail: bertol@informatik.uni-stuttgart.de)\n, , , , , , DE","University of Stuttgart, Department of Computer Science, Stuttgart, Germany (e-mail: bertol@informatik.uni-stuttgart.de) , DE"],"affiliations":[{"raw_affiliation_string":"University of Stuttgart, Department of Computer Science, Stuttgart, Germany (e-mail: bertol@informatik.uni-stuttgart.de)\n, , , , , , DE","institution_ids":["https://openalex.org/I31582689","https://openalex.org/I100066346"]},{"raw_affiliation_string":"University of Stuttgart, Department of Computer Science, Stuttgart, Germany (e-mail: bertol@informatik.uni-stuttgart.de) , DE","institution_ids":["https://openalex.org/I100066346"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5017293831"],"corresponding_institution_ids":["https://openalex.org/I227486990","https://openalex.org/I4210111519"],"apc_list":{"value":2390,"currency":"EUR","value_usd":2990},"apc_paid":null,"fwci":1.0202,"has_fulltext":false,"cited_by_count":17,"citation_normalized_percentile":{"value":0.73935234,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"35","issue":"6","first_page":"505","last_page":"539"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11567","display_name":"semigroups and automata theory","score":0.9984999895095825,"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":0.9984999895095825,"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/T11727","display_name":"Advanced Algebra and Logic","score":0.9951000213623047,"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":0.98580002784729,"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/variety","display_name":"Variety (cybernetics)","score":0.7351881265640259},{"id":"https://openalex.org/keywords/singleton","display_name":"Singleton","score":0.6472444534301758},{"id":"https://openalex.org/keywords/concatenation","display_name":"Concatenation (mathematics)","score":0.636370062828064},{"id":"https://openalex.org/keywords/sigma","display_name":"Sigma","score":0.6214401721954346},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.6152375340461731},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.6085993051528931},{"id":"https://openalex.org/keywords/monoid","display_name":"Monoid","score":0.5267269611358643},{"id":"https://openalex.org/keywords/binary-operation","display_name":"Binary operation","score":0.4720417261123657},{"id":"https://openalex.org/keywords/product","display_name":"Product (mathematics)","score":0.45795097947120667},{"id":"https://openalex.org/keywords/constant","display_name":"Constant (computer programming)","score":0.4569634795188904},{"id":"https://openalex.org/keywords/word","display_name":"Word (group theory)","score":0.42877405881881714},{"id":"https://openalex.org/keywords/semigroup","display_name":"Semigroup","score":0.4174266457557678},{"id":"https://openalex.org/keywords/theory-of-computation","display_name":"Theory of computation","score":0.41110071539878845},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3851492702960968},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.35165607929229736},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.19483593106269836},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.16361865401268005},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.13470175862312317},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.13461056351661682},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.08662119507789612}],"concepts":[{"id":"https://openalex.org/C136197465","wikidata":"https://www.wikidata.org/wiki/Q1729295","display_name":"Variety (cybernetics)","level":2,"score":0.7351881265640259},{"id":"https://openalex.org/C117354338","wikidata":"https://www.wikidata.org/wiki/Q1165112","display_name":"Singleton","level":3,"score":0.6472444534301758},{"id":"https://openalex.org/C87619178","wikidata":"https://www.wikidata.org/wiki/Q126002","display_name":"Concatenation (mathematics)","level":2,"score":0.636370062828064},{"id":"https://openalex.org/C2778049214","wikidata":"https://www.wikidata.org/wiki/Q7512234","display_name":"Sigma","level":2,"score":0.6214401721954346},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.6152375340461731},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.6085993051528931},{"id":"https://openalex.org/C206901836","wikidata":"https://www.wikidata.org/wiki/Q208237","display_name":"Monoid","level":2,"score":0.5267269611358643},{"id":"https://openalex.org/C185529760","wikidata":"https://www.wikidata.org/wiki/Q164307","display_name":"Binary operation","level":2,"score":0.4720417261123657},{"id":"https://openalex.org/C90673727","wikidata":"https://www.wikidata.org/wiki/Q901718","display_name":"Product (mathematics)","level":2,"score":0.45795097947120667},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.4569634795188904},{"id":"https://openalex.org/C90805587","wikidata":"https://www.wikidata.org/wiki/Q10944557","display_name":"Word (group theory)","level":2,"score":0.42877405881881714},{"id":"https://openalex.org/C207405024","wikidata":"https://www.wikidata.org/wiki/Q207348","display_name":"Semigroup","level":2,"score":0.4174266457557678},{"id":"https://openalex.org/C24858836","wikidata":"https://www.wikidata.org/wiki/Q844718","display_name":"Theory of computation","level":2,"score":0.41110071539878845},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3851492702960968},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.35165607929229736},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.19483593106269836},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.16361865401268005},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.13470175862312317},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.13461056351661682},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.08662119507789612},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C2779234561","wikidata":"https://www.wikidata.org/wiki/Q11995","display_name":"Pregnancy","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/s002360050129","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s002360050129","pdf_url":null,"source":{"id":"https://openalex.org/S84409463","display_name":"Acta Informatica","issn_l":"0001-5903","issn":["0001-5903","1432-0525"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Acta Informatica","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Reduced inequalities","score":0.5099999904632568,"id":"https://metadata.un.org/sdg/10"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W21709337","https://openalex.org/W137476671","https://openalex.org/W1514655124","https://openalex.org/W1567957328","https://openalex.org/W1570949334","https://openalex.org/W1972289972","https://openalex.org/W1978996774","https://openalex.org/W1985495277","https://openalex.org/W2008967744","https://openalex.org/W2010303126","https://openalex.org/W2095975761","https://openalex.org/W2100544365","https://openalex.org/W2146485104","https://openalex.org/W2149366752","https://openalex.org/W2163152086","https://openalex.org/W2171876361"],"related_works":["https://openalex.org/W203356024","https://openalex.org/W2386248435","https://openalex.org/W2762094349","https://openalex.org/W4212828952","https://openalex.org/W2033701980","https://openalex.org/W2963805867","https://openalex.org/W4367000290","https://openalex.org/W2892268807","https://openalex.org/W262066018","https://openalex.org/W1965853409"],"abstract_inverted_index":null,"counts_by_year":[{"year":2017,"cited_by_count":3},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}