{"id":"https://openalex.org/W1980078505","doi":"https://doi.org/10.1007/bf02986683","title":"New Extensions of Kernel Perfect Digraphs to Kernel Imperfect Critical Digraphs","display_name":"New Extensions of Kernel Perfect Digraphs to Kernel Imperfect Critical Digraphs","publication_year":1994,"publication_date":"1994-06-01","ids":{"openalex":"https://openalex.org/W1980078505","doi":"https://doi.org/10.1007/bf02986683","mag":"1980078505"},"language":"en","primary_location":{"id":"doi:10.1007/bf02986683","is_oa":false,"landing_page_url":"https://doi.org/10.1007/bf02986683","pdf_url":null,"source":{"id":"https://openalex.org/S186126824","display_name":"Graphs and Combinatorics","issn_l":"0911-0119","issn":["0911-0119","1435-5914"],"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":"Graphs and 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/A5029325738","display_name":"Hortensia Galeana\u2010S\u00e1nchez","orcid":"https://orcid.org/0000-0002-5744-8880"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"H. Galeana-S\u00e1nchez","raw_affiliation_strings":["Instituto de Mathematicas de 1a U.N.A.M., Ciudad Universitaria, D.F. 04510, Mexico","Instituto de Mathematicas de 1a U.N.A.M., Ciudad Universitaria, Mexico D.F. 04510#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Instituto de Mathematicas de 1a U.N.A.M., Ciudad Universitaria, D.F. 04510, Mexico","institution_ids":[]},{"raw_affiliation_string":"Instituto de Mathematicas de 1a U.N.A.M., Ciudad Universitaria, Mexico D.F. 04510#TAB#","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5110119690","display_name":"V. Neumann\u2010Lara","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"V. Neumann-Lara","raw_affiliation_strings":["Instituto de Mathematicas de 1a U.N.A.M., Ciudad Universitaria, D.F. 04510, Mexico","Instituto de Mathematicas de 1a U.N.A.M., Ciudad Universitaria, Mexico D.F. 04510#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Instituto de Mathematicas de 1a U.N.A.M., Ciudad Universitaria, D.F. 04510, Mexico","institution_ids":[]},{"raw_affiliation_string":"Instituto de Mathematicas de 1a U.N.A.M., Ciudad Universitaria, Mexico D.F. 04510#TAB#","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2890,"currency":"USD","value_usd":2890},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.09831297,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"10","issue":"2-4","first_page":"329","last_page":"336"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10374","display_name":"Advanced Graph Theory Research","score":0.9993000030517578,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10374","display_name":"Advanced Graph Theory Research","score":0.9993000030517578,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11476","display_name":"Graph theory and applications","score":0.9991999864578247,"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/T10996","display_name":"Computational Geometry and Mesh Generation","score":0.9945999979972839,"subfield":{"id":"https://openalex.org/subfields/1704","display_name":"Computer Graphics and Computer-Aided Design"},"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":0.7923693656921387},{"id":"https://openalex.org/keywords/kernel","display_name":"Kernel (algebra)","score":0.581985592842102},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.5488574504852295},{"id":"https://openalex.org/keywords/imperfect","display_name":"Imperfect","score":0.48223623633384705},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.4487329423427582}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.7923693656921387},{"id":"https://openalex.org/C74193536","wikidata":"https://www.wikidata.org/wiki/Q574844","display_name":"Kernel (algebra)","level":2,"score":0.581985592842102},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.5488574504852295},{"id":"https://openalex.org/C2780310539","wikidata":"https://www.wikidata.org/wiki/Q12547192","display_name":"Imperfect","level":2,"score":0.48223623633384705},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.4487329423427582},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","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:10.1007/bf02986683","is_oa":false,"landing_page_url":"https://doi.org/10.1007/bf02986683","pdf_url":null,"source":{"id":"https://openalex.org/S186126824","display_name":"Graphs and Combinatorics","issn_l":"0911-0119","issn":["0911-0119","1435-5914"],"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":"Graphs and 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":3,"referenced_works":["https://openalex.org/W2071073555","https://openalex.org/W2075002862","https://openalex.org/W2083702432"],"related_works":["https://openalex.org/W2374250903","https://openalex.org/W1979597421","https://openalex.org/W2007980826","https://openalex.org/W4245490552","https://openalex.org/W4225152035","https://openalex.org/W2061531152","https://openalex.org/W3002753104","https://openalex.org/W2077600819","https://openalex.org/W1587224694","https://openalex.org/W2911598644"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-07-23T08:03:31.855105","created_date":"2025-10-10T00:00:00"}
