{"id":"https://openalex.org/W2077510745","doi":"https://doi.org/10.1007/s00493-007-0049-y","title":"A Non-Existence Result For Finite Projective Planes In Lenz-Barlotti Class I.4","display_name":"A Non-Existence Result For Finite Projective Planes In Lenz-Barlotti Class I.4","publication_year":2007,"publication_date":"2007-03-01","ids":{"openalex":"https://openalex.org/W2077510745","doi":"https://doi.org/10.1007/s00493-007-0049-y","mag":"2077510745"},"language":"en","primary_location":{"id":"doi:10.1007/s00493-007-0049-y","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00493-007-0049-y","pdf_url":null,"source":{"id":"https://openalex.org/S72366220","display_name":"COMBINATORICA","issn_l":"0209-9683","issn":["0209-9683","1439-6912"],"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":"Combinatorica","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/A5010499058","display_name":"Dina Ghinelli","orcid":null},"institutions":[{"id":"https://openalex.org/I861853513","display_name":"Sapienza University of Rome","ror":"https://ror.org/02be6w209","country_code":"IT","type":"education","lineage":["https://openalex.org/I861853513"]}],"countries":["IT"],"is_corresponding":true,"raw_author_name":"Dina Ghinelli","raw_affiliation_strings":["Dipartimento di Matematica, Universit\u00e0 di Roma \u201cLa Sapienza\u201d, 2, Piazzale Aldo Moro, I-00185, Roma, Italy","Universit\u00e0 di Roma \u201cLa Sapienza\u201d, Dipartimento di Matematica, 2, Piazzale Aldo Moro, I-00185, Roma, Italy#TAB#"],"affiliations":[{"raw_affiliation_string":"Dipartimento di Matematica, Universit\u00e0 di Roma \u201cLa Sapienza\u201d, 2, Piazzale Aldo Moro, I-00185, Roma, Italy","institution_ids":["https://openalex.org/I861853513"]},{"raw_affiliation_string":"Universit\u00e0 di Roma \u201cLa Sapienza\u201d, Dipartimento di Matematica, 2, Piazzale Aldo Moro, I-00185, Roma, Italy#TAB#","institution_ids":["https://openalex.org/I861853513"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021380531","display_name":"Dieter Jungnickel","orcid":"https://orcid.org/0000-0001-5615-6934"},"institutions":[{"id":"https://openalex.org/I179225836","display_name":"University of Augsburg","ror":"https://ror.org/03p14d497","country_code":"DE","type":"education","lineage":["https://openalex.org/I179225836"]},{"id":"https://openalex.org/I119916105","display_name":"Augsburg University","ror":"https://ror.org/057ewhh68","country_code":"US","type":"education","lineage":["https://openalex.org/I119916105"]}],"countries":["DE","US"],"is_corresponding":false,"raw_author_name":"Dieter Jungnickel","raw_affiliation_strings":["Lehrstuhl f\u00fcr Diskrete Mathematik, Optimierung und Operations Research, Universit\u00e4t Augsburg, D-86135, Augsburg, Germany","Universit\u00e4t Augsburg, Lehrstuhl f\u00fcr Diskrete Mathematik, Optimierung und Operations Research, 2, Piazzale Aldo Moro, D-86135, Augsburg, Germany#TAB#"],"affiliations":[{"raw_affiliation_string":"Lehrstuhl f\u00fcr Diskrete Mathematik, Optimierung und Operations Research, Universit\u00e4t Augsburg, D-86135, Augsburg, Germany","institution_ids":["https://openalex.org/I179225836"]},{"raw_affiliation_string":"Universit\u00e4t Augsburg, Lehrstuhl f\u00fcr Diskrete Mathematik, Optimierung und Operations Research, 2, Piazzale Aldo Moro, D-86135, Augsburg, Germany#TAB#","institution_ids":["https://openalex.org/I119916105"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5010499058"],"corresponding_institution_ids":["https://openalex.org/I861853513"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.13052567,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"27","issue":"2","first_page":"163","last_page":"166"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","score":0.9998000264167786,"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"}},"topics":[{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","score":0.9998000264167786,"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"}},{"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"}},{"id":"https://openalex.org/T11130","display_name":"Coding theory and cryptography","score":0.9929999709129333,"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/mathematics","display_name":"Mathematics","score":0.8859927654266357},{"id":"https://openalex.org/keywords/projective-plane","display_name":"Projective plane","score":0.7418915629386902},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.6953974366188049},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.6739583015441895},{"id":"https://openalex.org/keywords/projective-test","display_name":"Projective test","score":0.5950546264648438},{"id":"https://openalex.org/keywords/order","display_name":"Order (exchange)","score":0.48062628507614136},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.2812918424606323},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.18482354283332825},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.04132843017578125}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.8859927654266357},{"id":"https://openalex.org/C39290043","wikidata":"https://www.wikidata.org/wiki/Q1475760","display_name":"Projective plane","level":3,"score":0.7418915629386902},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.6953974366188049},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.6739583015441895},{"id":"https://openalex.org/C177846678","wikidata":"https://www.wikidata.org/wiki/Q1501864","display_name":"Projective test","level":2,"score":0.5950546264648438},{"id":"https://openalex.org/C182306322","wikidata":"https://www.wikidata.org/wiki/Q1779371","display_name":"Order (exchange)","level":2,"score":0.48062628507614136},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.2812918424606323},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.18482354283332825},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.04132843017578125},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C117220453","wikidata":"https://www.wikidata.org/wiki/Q5172842","display_name":"Correlation","level":2,"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/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1007/s00493-007-0049-y","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00493-007-0049-y","pdf_url":null,"source":{"id":"https://openalex.org/S72366220","display_name":"COMBINATORICA","issn_l":"0209-9683","issn":["0209-9683","1439-6912"],"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":"Combinatorica","raw_type":"journal-article"},{"id":"pmh:oai:iris.uniroma1.it:11573/31325","is_oa":false,"landing_page_url":"http://hdl.handle.net/11573/31325","pdf_url":null,"source":{"id":"https://openalex.org/S4377196107","display_name":"IRIS Research product catalog (Sapienza University of Rome)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:uni-augsburg.opus-bayern.de:64788","is_oa":false,"landing_page_url":"https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/64788","pdf_url":null,"source":{"id":"https://openalex.org/S4306400930","display_name":"OPUS (Augsburg University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I119916105","host_organization_name":"Augsburg University","host_organization_lineage":["https://openalex.org/I119916105"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Reduced inequalities","score":0.4099999964237213,"id":"https://metadata.un.org/sdg/10"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W13185210","https://openalex.org/W1968431332","https://openalex.org/W2025386762","https://openalex.org/W2101876599","https://openalex.org/W2110278130","https://openalex.org/W2271229412","https://openalex.org/W2912810145"],"related_works":["https://openalex.org/W2001489718","https://openalex.org/W2024319036","https://openalex.org/W1549557214","https://openalex.org/W1982071305","https://openalex.org/W2004502427","https://openalex.org/W2419173576","https://openalex.org/W2073468254","https://openalex.org/W2059052781","https://openalex.org/W2038968071","https://openalex.org/W2348093013"],"abstract_inverted_index":null,"counts_by_year":[{"year":2018,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
