{"id":"https://openalex.org/W129775189","doi":"https://doi.org/10.1016/0304-3975(86)90080-0","title":"On \u03b10-products and \u03b12-products","display_name":"On \u03b10-products and \u03b12-products","publication_year":1986,"publication_date":"1986-01-01","ids":{"openalex":"https://openalex.org/W129775189","doi":"https://doi.org/10.1016/0304-3975(86)90080-0","mag":"129775189"},"language":"en","primary_location":{"id":"doi:10.1016/0304-3975(86)90080-0","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(86)90080-0","pdf_url":null,"source":{"id":"https://openalex.org/S90727058","display_name":"Theoretical Computer Science","issn_l":"0304-3975","issn":["0304-3975","1879-2294"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Theoretical Computer Science","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/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":false,"raw_author_name":"Zolt\u00e1n \u00c9sik","raw_affiliation_strings":["Bolyai Institute, A. J\u00f3zsef University, Szeged, 6720, Hungary","A. Jo\u00b4zsef Univ., Szeged, Hungary#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Bolyai Institute, A. J\u00f3zsef University, Szeged, 6720, Hungary","institution_ids":[]},{"raw_affiliation_string":"A. Jo\u00b4zsef Univ., Szeged, Hungary#TAB#","institution_ids":["https://openalex.org/I4210111519"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5109834640","display_name":"Ferenc G\u00e9cseg","orcid":null},"institutions":[{"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":false,"raw_author_name":"Ferenc G\u00e9cseg","raw_affiliation_strings":["Bolyai Institute, A. J\u00f3zsef University, Szeged, 6720, Hungary","A. Jo\u00b4zsef Univ., Szeged, Hungary#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Bolyai Institute, A. J\u00f3zsef University, Szeged, 6720, Hungary","institution_ids":[]},{"raw_affiliation_string":"A. Jo\u00b4zsef Univ., Szeged, Hungary#TAB#","institution_ids":["https://openalex.org/I4210111519"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4210111519"],"apc_list":{"value":2600,"currency":"USD","value_usd":2600},"apc_paid":null,"fwci":0.9797,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.71311733,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"48","issue":null,"first_page":"1","last_page":"8"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11151","display_name":"Advanced Topology and Set Theory","score":0.9807000160217285,"subfield":{"id":"https://openalex.org/subfields/2608","display_name":"Geometry and Topology"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11151","display_name":"Advanced Topology and Set Theory","score":0.9807000160217285,"subfield":{"id":"https://openalex.org/subfields/2608","display_name":"Geometry and Topology"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12508","display_name":"Functional Equations Stability Results","score":0.96670001745224,"subfield":{"id":"https://openalex.org/subfields/2604","display_name":"Applied Mathematics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11703","display_name":"Rings, Modules, and Algebras","score":0.9588000178337097,"subfield":{"id":"https://openalex.org/subfields/2602","display_name":"Algebra and Number Theory"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.7382456064224243},{"id":"https://openalex.org/keywords/product","display_name":"Product (mathematics)","score":0.6522855162620544},{"id":"https://openalex.org/keywords/completeness","display_name":"Completeness (order theory)","score":0.6419177055358887},{"id":"https://openalex.org/keywords/simple","display_name":"Simple (philosophy)","score":0.5577850937843323},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.5217293500900269},{"id":"https://openalex.org/keywords/decomposition-theorem","display_name":"Decomposition theorem","score":0.48055437207221985},{"id":"https://openalex.org/keywords/decomposition","display_name":"Decomposition","score":0.4483611583709717},{"id":"https://openalex.org/keywords/composition","display_name":"Composition (language)","score":0.4215660095214844},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.41018742322921753},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.384477823972702},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.3359116315841675},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.17589706182479858},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.08235707879066467}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.7382456064224243},{"id":"https://openalex.org/C90673727","wikidata":"https://www.wikidata.org/wiki/Q901718","display_name":"Product (mathematics)","level":2,"score":0.6522855162620544},{"id":"https://openalex.org/C17231256","wikidata":"https://www.wikidata.org/wiki/Q5156540","display_name":"Completeness (order theory)","level":2,"score":0.6419177055358887},{"id":"https://openalex.org/C2780586882","wikidata":"https://www.wikidata.org/wiki/Q7520643","display_name":"Simple (philosophy)","level":2,"score":0.5577850937843323},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.5217293500900269},{"id":"https://openalex.org/C2779182943","wikidata":"https://www.wikidata.org/wiki/Q25345219","display_name":"Decomposition theorem","level":2,"score":0.48055437207221985},{"id":"https://openalex.org/C124681953","wikidata":"https://www.wikidata.org/wiki/Q339062","display_name":"Decomposition","level":2,"score":0.4483611583709717},{"id":"https://openalex.org/C40231798","wikidata":"https://www.wikidata.org/wiki/Q1333743","display_name":"Composition (language)","level":2,"score":0.4215660095214844},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.41018742322921753},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.384477823972702},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.3359116315841675},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.17589706182479858},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.08235707879066467},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","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/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0304-3975(86)90080-0","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0304-3975(86)90080-0","pdf_url":null,"source":{"id":"https://openalex.org/S90727058","display_name":"Theoretical Computer Science","issn_l":"0304-3975","issn":["0304-3975","1879-2294"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Theoretical Computer Science","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W125417455","https://openalex.org/W167404348","https://openalex.org/W203130594","https://openalex.org/W1502820232","https://openalex.org/W1538941884","https://openalex.org/W1581140154","https://openalex.org/W2055275750","https://openalex.org/W2077450865"],"related_works":["https://openalex.org/W1585007175","https://openalex.org/W2382521049","https://openalex.org/W2121424666","https://openalex.org/W2144385241","https://openalex.org/W4301250310","https://openalex.org/W4300101996","https://openalex.org/W2055420561","https://openalex.org/W2206601122","https://openalex.org/W2974582698","https://openalex.org/W4288103909"],"abstract_inverted_index":null,"counts_by_year":[{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-07-23T08:03:31.855105","created_date":"2025-10-10T00:00:00"}