{"id":"https://openalex.org/W2000594915","doi":"https://doi.org/10.1016/0012-365x(89)90357-9","title":"The Steiner systems S(2,4,25) with nontrivial automorphism group","display_name":"The Steiner systems S(2,4,25) with nontrivial automorphism group","publication_year":1989,"publication_date":"1989-09-01","ids":{"openalex":"https://openalex.org/W2000594915","doi":"https://doi.org/10.1016/0012-365x(89)90357-9","mag":"2000594915"},"language":"en","primary_location":{"id":"doi:10.1016/0012-365x(89)90357-9","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0012-365x(89)90357-9","pdf_url":null,"source":{"id":"https://openalex.org/S18902827","display_name":"Discrete Mathematics","issn_l":"0012-365X","issn":["0012-365X","1872-681X"],"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":"Discrete Mathematics","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/A5083233000","display_name":"Earl S. Kramer","orcid":null},"institutions":[{"id":"https://openalex.org/I114395901","display_name":"University of Nebraska\u2013Lincoln","ror":"https://ror.org/043mer456","country_code":"US","type":"education","lineage":["https://openalex.org/I114395901"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Earl S. Kramer","raw_affiliation_strings":["University of Nebraska, Lincoln, Nebraska 68588-0323, U.S.A","University of Nebraska, Lincoln, Nebraska 68588\u20130323, U.S.A"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Nebraska, Lincoln, Nebraska 68588-0323, U.S.A","institution_ids":["https://openalex.org/I114395901"]},{"raw_affiliation_string":"University of Nebraska, Lincoln, Nebraska 68588\u20130323, U.S.A","institution_ids":["https://openalex.org/I114395901"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044624369","display_name":"Spyros S. Magliveras","orcid":null},"institutions":[{"id":"https://openalex.org/I114395901","display_name":"University of Nebraska\u2013Lincoln","ror":"https://ror.org/043mer456","country_code":"US","type":"education","lineage":["https://openalex.org/I114395901"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Spyros S. Magliveras","raw_affiliation_strings":["University of Nebraska, Lincoln, Nebraska 68588-0115, U.S.A","University of Nebraska, Lincoln, Nebraska 68588\u20130115, U.S.A"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Nebraska, Lincoln, Nebraska 68588-0115, U.S.A","institution_ids":["https://openalex.org/I114395901"]},{"raw_affiliation_string":"University of Nebraska, Lincoln, Nebraska 68588\u20130115, U.S.A","institution_ids":["https://openalex.org/I114395901"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5036147653","display_name":"Rudolf Mathon","orcid":null},"institutions":[{"id":"https://openalex.org/I185261750","display_name":"University of Toronto","ror":"https://ror.org/03dbr7087","country_code":"CA","type":"education","lineage":["https://openalex.org/I185261750"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Rudolf Mathon","raw_affiliation_strings":["University of Toronto, Toronto, Ontario M5S 1A4, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Toronto, Toronto, Ontario M5S 1A4, Canada","institution_ids":["https://openalex.org/I185261750"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":3320,"currency":"USD","value_usd":3320},"apc_paid":null,"fwci":1.5087,"has_fulltext":false,"cited_by_count":21,"citation_normalized_percentile":{"value":0.8128293,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"77","issue":"1-3","first_page":"137","last_page":"157"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13110","display_name":"Colorectal and Anal Carcinomas","score":0.8921999931335449,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T13110","display_name":"Colorectal and Anal Carcinomas","score":0.8921999931335449,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","score":0.885200023651123,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.8703556656837463},{"id":"https://openalex.org/keywords/automorphism-group","display_name":"Automorphism group","score":0.8064243793487549},{"id":"https://openalex.org/keywords/automorphism","display_name":"Automorphism","score":0.7525725364685059},{"id":"https://openalex.org/keywords/steiner-system","display_name":"Steiner system","score":0.6682760715484619},{"id":"https://openalex.org/keywords/fano-plane","display_name":"Fano plane","score":0.6264033913612366},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.6059294939041138},{"id":"https://openalex.org/keywords/block-design","display_name":"Block design","score":0.5320701599121094},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.5125391483306885},{"id":"https://openalex.org/keywords/group","display_name":"Group (periodic table)","score":0.5121052265167236},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4618929624557495},{"id":"https://openalex.org/keywords/order","display_name":"Order (exchange)","score":0.4500192403793335},{"id":"https://openalex.org/keywords/block","display_name":"Block (permutation group theory)","score":0.44809040427207947},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.2255493700504303}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.8703556656837463},{"id":"https://openalex.org/C2988750069","wikidata":"https://www.wikidata.org/wiki/Q60790315","display_name":"Automorphism group","level":3,"score":0.8064243793487549},{"id":"https://openalex.org/C118712358","wikidata":"https://www.wikidata.org/wiki/Q782566","display_name":"Automorphism","level":2,"score":0.7525725364685059},{"id":"https://openalex.org/C175695255","wikidata":"https://www.wikidata.org/wiki/Q4420916","display_name":"Steiner system","level":2,"score":0.6682760715484619},{"id":"https://openalex.org/C39757861","wikidata":"https://www.wikidata.org/wiki/Q1395814","display_name":"Fano plane","level":2,"score":0.6264033913612366},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.6059294939041138},{"id":"https://openalex.org/C689293","wikidata":"https://www.wikidata.org/wiki/Q751484","display_name":"Block design","level":2,"score":0.5320701599121094},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.5125391483306885},{"id":"https://openalex.org/C2781311116","wikidata":"https://www.wikidata.org/wiki/Q83306","display_name":"Group (periodic table)","level":2,"score":0.5121052265167236},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4618929624557495},{"id":"https://openalex.org/C182306322","wikidata":"https://www.wikidata.org/wiki/Q1779371","display_name":"Order (exchange)","level":2,"score":0.4500192403793335},{"id":"https://openalex.org/C2777210771","wikidata":"https://www.wikidata.org/wiki/Q4927124","display_name":"Block (permutation group theory)","level":2,"score":0.44809040427207947},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.2255493700504303},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0012-365x(89)90357-9","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0012-365x(89)90357-9","pdf_url":null,"source":{"id":"https://openalex.org/S18902827","display_name":"Discrete Mathematics","issn_l":"0012-365X","issn":["0012-365X","1872-681X"],"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":"Discrete Mathematics","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/10","display_name":"Reduced inequalities","score":0.7099999785423279}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W68536893","https://openalex.org/W1035690518","https://openalex.org/W1519634074","https://openalex.org/W1966513415","https://openalex.org/W2031679654","https://openalex.org/W2611298788","https://openalex.org/W2990457649","https://openalex.org/W4232236937","https://openalex.org/W6602772305","https://openalex.org/W6626759418"],"related_works":["https://openalex.org/W3187334535","https://openalex.org/W4302155387","https://openalex.org/W2949256963","https://openalex.org/W2545189445","https://openalex.org/W2115024785","https://openalex.org/W2949890955","https://openalex.org/W2085781584","https://openalex.org/W4289596368","https://openalex.org/W2963655131","https://openalex.org/W2000594915"],"abstract_inverted_index":null,"counts_by_year":[{"year":2020,"cited_by_count":1}],"updated_date":"2026-08-21T09:56:20.448147","created_date":"2025-10-10T00:00:00"}