{"id":"https://openalex.org/W2072778089","doi":"https://doi.org/10.1016/s0195-6698(13)80102-3","title":"Amorphous Association Schemes over the Galois Rings of Characteristic 4","display_name":"Amorphous Association Schemes over the Galois Rings of Characteristic 4","publication_year":1991,"publication_date":"1991-11-01","ids":{"openalex":"https://openalex.org/W2072778089","doi":"https://doi.org/10.1016/s0195-6698(13)80102-3","mag":"2072778089"},"language":"en","primary_location":{"id":"doi:10.1016/s0195-6698(13)80102-3","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0195-6698(13)80102-3","pdf_url":null,"source":{"id":"https://openalex.org/S204851967","display_name":"European Journal of Combinatorics","issn_l":"0195-6698","issn":["0195-6698","1095-9971"],"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":"European Journal of Combinatorics","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/A5112676953","display_name":"Tatsuro Ito","orcid":null},"institutions":[{"id":"https://openalex.org/I141479679","display_name":"Osaka Kyoiku University","ror":"https://ror.org/051j8zv27","country_code":"JP","type":"education","lineage":["https://openalex.org/I141479679"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Tatsuro Ito","raw_affiliation_strings":["Department of Mathematics, Osaka Kyoiku University, Tennoji, Osaka 543, Japan","Department of Mathematics, Osaka Kyoiku University, Tennoji, Osaka, 543 Japan"],"affiliations":[{"raw_affiliation_string":"Department of Mathematics, Osaka Kyoiku University, Tennoji, Osaka 543, Japan","institution_ids":["https://openalex.org/I141479679"]},{"raw_affiliation_string":"Department of Mathematics, Osaka Kyoiku University, Tennoji, Osaka, 543 Japan","institution_ids":["https://openalex.org/I141479679"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019144739","display_name":"Akihiro Munemasa","orcid":"https://orcid.org/0000-0002-2635-0733"},"institutions":[{"id":"https://openalex.org/I141479679","display_name":"Osaka Kyoiku University","ror":"https://ror.org/051j8zv27","country_code":"JP","type":"education","lineage":["https://openalex.org/I141479679"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Akihiro Munemasa","raw_affiliation_strings":["Department of Mathematics, Osaka Kyoiku University, Tennoji, Osaka 543, Japan","Department of Mathematics, Osaka Kyoiku University, Tennoji, Osaka, 543 Japan"],"affiliations":[{"raw_affiliation_string":"Department of Mathematics, Osaka Kyoiku University, Tennoji, Osaka 543, Japan","institution_ids":["https://openalex.org/I141479679"]},{"raw_affiliation_string":"Department of Mathematics, Osaka Kyoiku University, Tennoji, Osaka, 543 Japan","institution_ids":["https://openalex.org/I141479679"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5010023582","display_name":"Mieko Yamada","orcid":"https://orcid.org/0000-0002-3417-9358"},"institutions":[{"id":"https://openalex.org/I15991598","display_name":"Konan University","ror":"https://ror.org/059b5pb30","country_code":"JP","type":"education","lineage":["https://openalex.org/I15991598"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Mieko Yamada","raw_affiliation_strings":["Department of Applied Mathematics, Konan University, Okamoto, Higashinada-ku, Kobe 658, Japan"],"affiliations":[{"raw_affiliation_string":"Department of Applied Mathematics, Konan University, Okamoto, Higashinada-ku, Kobe 658, Japan","institution_ids":["https://openalex.org/I15991598"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5112676953"],"corresponding_institution_ids":["https://openalex.org/I141479679"],"apc_list":{"value":2880,"currency":"USD","value_usd":2880},"apc_paid":null,"fwci":1.2014,"has_fulltext":false,"cited_by_count":44,"citation_normalized_percentile":{"value":0.77254902,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"12","issue":"6","first_page":"513","last_page":"526"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11680","display_name":"Advanced Algebra and Geometry","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/2610","display_name":"Mathematical Physics"},"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/T11680","display_name":"Advanced Algebra and Geometry","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/2610","display_name":"Mathematical Physics"},"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/T10061","display_name":"Algebraic Geometry and Number Theory","score":0.9994000196456909,"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/T10849","display_name":"Finite Group Theory Research","score":0.9993000030517578,"subfield":{"id":"https://openalex.org/subfields/2607","display_name":"Discrete Mathematics and Combinatorics"},"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/association-scheme","display_name":"Association scheme","score":0.8529654741287231},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.8254787921905518},{"id":"https://openalex.org/keywords/amorphous-solid","display_name":"Amorphous solid","score":0.5665827989578247},{"id":"https://openalex.org/keywords/association","display_name":"Association (psychology)","score":0.477779746055603},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.4496779441833496},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3277151584625244},{"id":"https://openalex.org/keywords/crystallography","display_name":"Crystallography","score":0.198050856590271},{"id":"https://openalex.org/keywords/chemistry","display_name":"Chemistry","score":0.07407531142234802}],"concepts":[{"id":"https://openalex.org/C73361133","wikidata":"https://www.wikidata.org/wiki/Q4810150","display_name":"Association scheme","level":2,"score":0.8529654741287231},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.8254787921905518},{"id":"https://openalex.org/C56052488","wikidata":"https://www.wikidata.org/wiki/Q103382","display_name":"Amorphous solid","level":2,"score":0.5665827989578247},{"id":"https://openalex.org/C142853389","wikidata":"https://www.wikidata.org/wiki/Q744778","display_name":"Association (psychology)","level":2,"score":0.477779746055603},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.4496779441833496},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3277151584625244},{"id":"https://openalex.org/C8010536","wikidata":"https://www.wikidata.org/wiki/Q160398","display_name":"Crystallography","level":1,"score":0.198050856590271},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.07407531142234802},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","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}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/s0195-6698(13)80102-3","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0195-6698(13)80102-3","pdf_url":null,"source":{"id":"https://openalex.org/S204851967","display_name":"European Journal of Combinatorics","issn_l":"0195-6698","issn":["0195-6698","1095-9971"],"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":"European Journal of Combinatorics","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":9,"referenced_works":["https://openalex.org/W1969610557","https://openalex.org/W1998839600","https://openalex.org/W2006685010","https://openalex.org/W2037286809","https://openalex.org/W2079115897","https://openalex.org/W2087582295","https://openalex.org/W2091047177","https://openalex.org/W2318208685","https://openalex.org/W4205498948"],"related_works":["https://openalex.org/W2095059320","https://openalex.org/W1224313471","https://openalex.org/W3197326322","https://openalex.org/W2048240552","https://openalex.org/W2005838129","https://openalex.org/W2171569252","https://openalex.org/W3122761303","https://openalex.org/W4229705064","https://openalex.org/W2054051424","https://openalex.org/W599879082"],"abstract_inverted_index":null,"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":3},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2026-03-10T14:07:55.174380","created_date":"2025-10-10T00:00:00"}