{"id":"https://openalex.org/W1968274772","doi":"https://doi.org/10.1016/s0012-365x(00)00042-x","title":"On small uniquely vertex-colourable graphs and Xu's conjecture","display_name":"On small uniquely vertex-colourable graphs and Xu's conjecture","publication_year":2000,"publication_date":"2000-08-01","ids":{"openalex":"https://openalex.org/W1968274772","doi":"https://doi.org/10.1016/s0012-365x(00)00042-x","mag":"1968274772"},"language":"en","primary_location":{"id":"doi:10.1016/s0012-365x(00)00042-x","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0012-365x(00)00042-x","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/A5066820962","display_name":"Amir Daneshgar","orcid":"https://orcid.org/0000-0002-2639-5376"},"institutions":[{"id":"https://openalex.org/I133529467","display_name":"Sharif University of Technology","ror":"https://ror.org/024c2fq17","country_code":"IR","type":"education","lineage":["https://openalex.org/I133529467"]}],"countries":["IR"],"is_corresponding":true,"raw_author_name":"Amir Daneshgar","raw_affiliation_strings":["Department of Mathematical Sciences, Sharif University of Technology, P.O. Box 11365-9415, Tehran, Iran","Department of Mathematical Sciences, Sharif University of Technology, P.O. Box 11365\u20139415, Tehran, Iran#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Mathematical Sciences, Sharif University of Technology, P.O. Box 11365-9415, Tehran, Iran","institution_ids":["https://openalex.org/I133529467"]},{"raw_affiliation_string":"Department of Mathematical Sciences, Sharif University of Technology, P.O. Box 11365\u20139415, Tehran, Iran#TAB#","institution_ids":["https://openalex.org/I133529467"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5050560944","display_name":"Reza Naserasr","orcid":"https://orcid.org/0000-0001-6882-6034"},"institutions":[{"id":"https://openalex.org/I4210146419","display_name":"Institute for Research in Fundamental Sciences","ror":"https://ror.org/04xreqs31","country_code":"IR","type":"facility","lineage":["https://openalex.org/I4210146419"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Reza Naserasr","raw_affiliation_strings":["Institute for Studies in Theoretical, Physics and Mathematics (IPM), P.O. Box 19395-5746, Tehran, Iran"],"affiliations":[{"raw_affiliation_string":"Institute for Studies in Theoretical, Physics and Mathematics (IPM), P.O. Box 19395-5746, Tehran, Iran","institution_ids":["https://openalex.org/I4210146419"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5066820962"],"corresponding_institution_ids":["https://openalex.org/I133529467"],"apc_list":{"value":3000,"currency":"USD","value_usd":3000},"apc_paid":null,"fwci":0.1123,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.32895447,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"223","issue":"1-3","first_page":"93","last_page":"108"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13991","display_name":"Nuclear Receptors and Signaling","score":0.9761999845504761,"subfield":{"id":"https://openalex.org/subfields/2804","display_name":"Cellular and Molecular Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T13991","display_name":"Nuclear Receptors and Signaling","score":0.9761999845504761,"subfield":{"id":"https://openalex.org/subfields/2804","display_name":"Cellular and Molecular Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.907314658164978},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.7795641422271729},{"id":"https://openalex.org/keywords/conjecture","display_name":"Conjecture","score":0.712123692035675},{"id":"https://openalex.org/keywords/vertex","display_name":"Vertex (graph theory)","score":0.6584447026252747},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.49392229318618774},{"id":"https://openalex.org/keywords/neighbourhood","display_name":"Neighbourhood (mathematics)","score":0.43780916929244995},{"id":"https://openalex.org/keywords/vertex-connectivity","display_name":"Vertex connectivity","score":0.42799127101898193},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3747420012950897}],"concepts":[{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.907314658164978},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.7795641422271729},{"id":"https://openalex.org/C2780990831","wikidata":"https://www.wikidata.org/wiki/Q319141","display_name":"Conjecture","level":2,"score":0.712123692035675},{"id":"https://openalex.org/C80899671","wikidata":"https://www.wikidata.org/wiki/Q1304193","display_name":"Vertex (graph theory)","level":3,"score":0.6584447026252747},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.49392229318618774},{"id":"https://openalex.org/C161677786","wikidata":"https://www.wikidata.org/wiki/Q2478475","display_name":"Neighbourhood (mathematics)","level":2,"score":0.43780916929244995},{"id":"https://openalex.org/C2983226441","wikidata":"https://www.wikidata.org/wiki/Q3115621","display_name":"Vertex connectivity","level":4,"score":0.42799127101898193},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3747420012950897},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/s0012-365x(00)00042-x","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0012-365x(00)00042-x","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":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2902222102","https://openalex.org/W4287869573","https://openalex.org/W2129100545","https://openalex.org/W3004984242","https://openalex.org/W2039200643","https://openalex.org/W1980648360","https://openalex.org/W2122901591","https://openalex.org/W2023302035","https://openalex.org/W2137161871","https://openalex.org/W2339534957"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-03-10T14:07:55.174380","created_date":"2025-10-10T00:00:00"}