{"id":"https://openalex.org/W1963498955","doi":"https://doi.org/10.1007/bf01752403","title":"Transformations of structures: An algebraic approach","display_name":"Transformations of structures: An algebraic approach","publication_year":1981,"publication_date":"1981-12-01","ids":{"openalex":"https://openalex.org/W1963498955","doi":"https://doi.org/10.1007/bf01752403","mag":"1963498955"},"language":"en","primary_location":{"id":"doi:10.1007/bf01752403","is_oa":false,"landing_page_url":"https://doi.org/10.1007/bf01752403","pdf_url":null,"source":{"id":"https://openalex.org/S4210177266","display_name":"Theory of Computing Systems","issn_l":"1432-4350","issn":["1432-4350","1433-0490"],"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":"Mathematical Systems Theory","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/A5002594574","display_name":"Hartmut Ehrig","orcid":null},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Hartmut Ehrig","raw_affiliation_strings":[],"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042029979","display_name":"Hans\u2010J\u00f6rg Kreowski","orcid":"https://orcid.org/0000-0003-0578-5882"},"institutions":[{"id":"https://openalex.org/I4577782","display_name":"Technische Universit\u00e4t Berlin","ror":"https://ror.org/03v4gjf40","country_code":"DE","type":"education","lineage":["https://openalex.org/I4577782"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Hans-J\u00f6rg Kreowski","raw_affiliation_strings":["Fachbereich Informatik, Technische Universit\u00e4t Berlin, 1000, Berlin 10, Federal Republic of Germany","Fachbereich Informatik, Technische Universit\u00e4t Berlin, Berlin 10, Federal Republic of Germany"],"affiliations":[{"raw_affiliation_string":"Fachbereich Informatik, Technische Universit\u00e4t Berlin, 1000, Berlin 10, Federal Republic of Germany","institution_ids":["https://openalex.org/I4577782"]},{"raw_affiliation_string":"Fachbereich Informatik, Technische Universit\u00e4t Berlin, Berlin 10, Federal Republic of Germany","institution_ids":["https://openalex.org/I4577782"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111495699","display_name":"Andrea Maggiolo\u2013Schettini","orcid":null},"institutions":[{"id":"https://openalex.org/I108290504","display_name":"University of Pisa","ror":"https://ror.org/03ad39j10","country_code":"IT","type":"education","lineage":["https://openalex.org/I108290504"]},{"id":"https://openalex.org/I122991210","display_name":"Istituto di Scienza e Tecnologie dell'Informazione \"Alessandro Faedo\"","ror":"https://ror.org/05kacka20","country_code":"IT","type":"facility","lineage":["https://openalex.org/I122991210","https://openalex.org/I4210155236"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Andrea Maggiolo-Schettini","raw_affiliation_strings":["Istituto di Scienze dell'Informazione, Universita di Pisa, 56100, Pisa, Italy","Istituto di Scienze dell'Informazione, Universita di Pisa, Pisa, Italy#TAB#"],"affiliations":[{"raw_affiliation_string":"Istituto di Scienze dell'Informazione, Universita di Pisa, 56100, Pisa, Italy","institution_ids":["https://openalex.org/I108290504","https://openalex.org/I122991210"]},{"raw_affiliation_string":"Istituto di Scienze dell'Informazione, Universita di Pisa, Pisa, Italy#TAB#","institution_ids":["https://openalex.org/I108290504"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5011220916","display_name":"Barry K. Rosen","orcid":null},"institutions":[{"id":"https://openalex.org/I4210114115","display_name":"IBM Research - Thomas J. Watson Research Center","ror":"https://ror.org/0265w5591","country_code":"US","type":"facility","lineage":["https://openalex.org/I1341412227","https://openalex.org/I4210114115"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Barry K. Rosen","raw_affiliation_strings":["Computer Sciences Department, IBM Thomas J. Watson Research Center, 10598, Yorktown Heights, NY, USA","Computer Sciences Department, IBM Thomas J. Watson Research Center, Yorktown Heights, USA"],"affiliations":[{"raw_affiliation_string":"Computer Sciences Department, IBM Thomas J. Watson Research Center, 10598, Yorktown Heights, NY, USA","institution_ids":["https://openalex.org/I4210114115"]},{"raw_affiliation_string":"Computer Sciences Department, IBM Thomas J. Watson Research Center, Yorktown Heights, USA","institution_ids":["https://openalex.org/I4210114115"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021492778","display_name":"J\u00f3zef Winkowski","orcid":null},"institutions":[{"id":"https://openalex.org/I4210087266","display_name":"Institute of Computer Science","ror":"https://ror.org/003fvp964","country_code":"PL","type":"facility","lineage":["https://openalex.org/I4210087266","https://openalex.org/I99542240"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"Jozef Winkowski","raw_affiliation_strings":["Instytut Podstaw Informatyki PAN, Box 22, 00-901, Warszawa, PKiN, Poland","Instytut Podstaw Informatyki PAN, Warszawa, Poland"],"affiliations":[{"raw_affiliation_string":"Instytut Podstaw Informatyki PAN, Box 22, 00-901, Warszawa, PKiN, Poland","institution_ids":["https://openalex.org/I4210087266"]},{"raw_affiliation_string":"Instytut Podstaw Informatyki PAN, Warszawa, Poland","institution_ids":["https://openalex.org/I4210087266"]}]}],"institutions":[],"countries_distinct_count":4,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5002594574"],"corresponding_institution_ids":[],"apc_list":{"value":2290,"currency":"EUR","value_usd":2890},"apc_paid":null,"fwci":1.9089,"has_fulltext":false,"cited_by_count":52,"citation_normalized_percentile":{"value":0.85685256,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"14","issue":"1","first_page":"305","last_page":"334"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10317","display_name":"Advanced Database Systems and Queries","score":0.9868000149726868,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/T10317","display_name":"Advanced Database Systems and Queries","score":0.9868000149726868,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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":0.9817000031471252,"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/T11596","display_name":"Constraint Satisfaction and Optimization","score":0.9648000001907349,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/algebraic-structure","display_name":"Algebraic structure","score":0.6512181758880615},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5906219482421875},{"id":"https://openalex.org/keywords/mathematical-structure","display_name":"Mathematical structure","score":0.5604076981544495},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.47529304027557373},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.46809032559394836},{"id":"https://openalex.org/keywords/algebraic-number","display_name":"Algebraic number","score":0.45937833189964294},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.32526159286499023},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.1660880744457245}],"concepts":[{"id":"https://openalex.org/C182419690","wikidata":"https://www.wikidata.org/wiki/Q205464","display_name":"Algebraic structure","level":2,"score":0.6512181758880615},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5906219482421875},{"id":"https://openalex.org/C130327152","wikidata":"https://www.wikidata.org/wiki/Q748349","display_name":"Mathematical structure","level":2,"score":0.5604076981544495},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.47529304027557373},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.46809032559394836},{"id":"https://openalex.org/C9376300","wikidata":"https://www.wikidata.org/wiki/Q168817","display_name":"Algebraic number","level":2,"score":0.45937833189964294},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.32526159286499023},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.1660880744457245},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C145420912","wikidata":"https://www.wikidata.org/wiki/Q853077","display_name":"Mathematics education","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/bf01752403","is_oa":false,"landing_page_url":"https://doi.org/10.1007/bf01752403","pdf_url":null,"source":{"id":"https://openalex.org/S4210177266","display_name":"Theory of Computing Systems","issn_l":"1432-4350","issn":["1432-4350","1433-0490"],"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":"Mathematical Systems Theory","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":27,"referenced_works":["https://openalex.org/W1526727862","https://openalex.org/W1543693058","https://openalex.org/W1965970196","https://openalex.org/W1971379194","https://openalex.org/W1982303885","https://openalex.org/W2015278167","https://openalex.org/W2022014483","https://openalex.org/W2022572034","https://openalex.org/W2025170645","https://openalex.org/W2027839484","https://openalex.org/W2030550007","https://openalex.org/W2031160470","https://openalex.org/W2043721381","https://openalex.org/W2044838697","https://openalex.org/W2047907247","https://openalex.org/W2059438585","https://openalex.org/W2071570031","https://openalex.org/W2075052434","https://openalex.org/W2165467455","https://openalex.org/W2166060774","https://openalex.org/W2185907055","https://openalex.org/W2488234670","https://openalex.org/W2499474130","https://openalex.org/W2536118580","https://openalex.org/W2798613517","https://openalex.org/W4206667141","https://openalex.org/W4210456194"],"related_works":["https://openalex.org/W2885964212","https://openalex.org/W2892231951","https://openalex.org/W3165748907","https://openalex.org/W3135717796","https://openalex.org/W3203278530","https://openalex.org/W2963122323","https://openalex.org/W283664946","https://openalex.org/W129876808","https://openalex.org/W2952766601","https://openalex.org/W2028835737"],"abstract_inverted_index":null,"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2014,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
