{"id":"https://openalex.org/W2074383890","doi":"https://doi.org/10.1007/pl00009250","title":"Separators in Graphs with Negative and Multiple Vertex Weights","display_name":"Separators in Graphs with Negative and Multiple Vertex Weights","publication_year":1999,"publication_date":"1999-01-01","ids":{"openalex":"https://openalex.org/W2074383890","doi":"https://doi.org/10.1007/pl00009250","mag":"2074383890"},"language":"en","primary_location":{"id":"doi:10.1007/pl00009250","is_oa":false,"landing_page_url":"https://doi.org/10.1007/pl00009250","pdf_url":null,"source":{"id":"https://openalex.org/S89324355","display_name":"Algorithmica","issn_l":"0178-4617","issn":["0178-4617","1432-0541"],"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":"Algorithmica","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/A5057625550","display_name":"Hristo Djidjev","orcid":"https://orcid.org/0000-0001-9286-8824"},"institutions":[{"id":"https://openalex.org/I74775410","display_name":"Rice University","ror":"https://ror.org/008zs3103","country_code":"US","type":"education","lineage":["https://openalex.org/I74775410"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"H. N. Djidjev","raw_affiliation_strings":["Department of Computer Science, Rice University, \t\t\tP.O. Box 1892, Houston, TX 77005, USA. hristo@cs.rice.edu., , , , , , US","Department of Computer Science, Rice University, #TAB##TAB##TAB#P.O. Box 1892, Houston, TX 77005, USA. hristo@cs.rice.edu., , US"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, Rice University, \t\t\tP.O. Box 1892, Houston, TX 77005, USA. hristo@cs.rice.edu., , , , , , US","institution_ids":["https://openalex.org/I74775410"]},{"raw_affiliation_string":"Department of Computer Science, Rice University, #TAB##TAB##TAB#P.O. Box 1892, Houston, TX 77005, USA. hristo@cs.rice.edu., , US","institution_ids":["https://openalex.org/I74775410"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5108223550","display_name":"John R. Gilbert","orcid":null},"institutions":[{"id":"https://openalex.org/I173498003","display_name":"Palo Alto Research Center","ror":"https://ror.org/0529fxt39","country_code":"US","type":"facility","lineage":["https://openalex.org/I173498003","https://openalex.org/I4210132870"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"J. R. Gilbert","raw_affiliation_strings":["Xerox Palo Alto Research Center,   3333 Coyote Hill Road,   Palo Alto, CA 94304, USA., , , , , , US","Xerox Palo Alto Research Center, 3333 Coyote Hill Road, Palo Alto, CA 94304, USA, US"],"affiliations":[{"raw_affiliation_string":"Xerox Palo Alto Research Center,   3333 Coyote Hill Road,   Palo Alto, CA 94304, USA., , , , , , US","institution_ids":["https://openalex.org/I173498003"]},{"raw_affiliation_string":"Xerox Palo Alto Research Center, 3333 Coyote Hill Road, Palo Alto, CA 94304, USA, US","institution_ids":["https://openalex.org/I173498003"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5057625550"],"corresponding_institution_ids":["https://openalex.org/I74775410"],"apc_list":{"value":2290,"currency":"EUR","value_usd":2890},"apc_paid":null,"fwci":1.4652,"has_fulltext":false,"cited_by_count":12,"citation_normalized_percentile":{"value":0.82427168,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"23","issue":"1","first_page":"57","last_page":"71"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10374","display_name":"Advanced Graph Theory Research","score":0.9998000264167786,"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":0.9998000264167786,"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/T10720","display_name":"Complexity and Algorithms in Graphs","score":0.9991000294685364,"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/T11329","display_name":"Limits and Structures in Graph Theory","score":0.9911999702453613,"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/combinatorics","display_name":"Combinatorics","score":0.8172322511672974},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.7648651599884033},{"id":"https://openalex.org/keywords/chordal-graph","display_name":"Chordal graph","score":0.5737252831459045},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.5158292651176453},{"id":"https://openalex.org/keywords/vertex","display_name":"Vertex (graph theory)","score":0.4652920961380005},{"id":"https://openalex.org/keywords/bounded-function","display_name":"Bounded function","score":0.45242607593536377},{"id":"https://openalex.org/keywords/maximal-independent-set","display_name":"Maximal independent set","score":0.45015352964401245},{"id":"https://openalex.org/keywords/indifference-graph","display_name":"Indifference graph","score":0.4320168197154999},{"id":"https://openalex.org/keywords/independent-set","display_name":"Independent set","score":0.4244350790977478},{"id":"https://openalex.org/keywords/pathwidth","display_name":"Pathwidth","score":0.4167398512363434},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.37709322571754456},{"id":"https://openalex.org/keywords/1-planar-graph","display_name":"1-planar graph","score":0.2948276400566101},{"id":"https://openalex.org/keywords/line-graph","display_name":"Line graph","score":0.26570868492126465}],"concepts":[{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.8172322511672974},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.7648651599884033},{"id":"https://openalex.org/C160446614","wikidata":"https://www.wikidata.org/wiki/Q1322892","display_name":"Chordal graph","level":3,"score":0.5737252831459045},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.5158292651176453},{"id":"https://openalex.org/C80899671","wikidata":"https://www.wikidata.org/wiki/Q1304193","display_name":"Vertex (graph theory)","level":3,"score":0.4652920961380005},{"id":"https://openalex.org/C34388435","wikidata":"https://www.wikidata.org/wiki/Q2267362","display_name":"Bounded function","level":2,"score":0.45242607593536377},{"id":"https://openalex.org/C18359143","wikidata":"https://www.wikidata.org/wiki/Q7888149","display_name":"Maximal independent set","level":5,"score":0.45015352964401245},{"id":"https://openalex.org/C74133993","wikidata":"https://www.wikidata.org/wiki/Q3115472","display_name":"Indifference graph","level":3,"score":0.4320168197154999},{"id":"https://openalex.org/C122818955","wikidata":"https://www.wikidata.org/wiki/Q1060343","display_name":"Independent set","level":3,"score":0.4244350790977478},{"id":"https://openalex.org/C43517604","wikidata":"https://www.wikidata.org/wiki/Q7144893","display_name":"Pathwidth","level":4,"score":0.4167398512363434},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.37709322571754456},{"id":"https://openalex.org/C102192266","wikidata":"https://www.wikidata.org/wiki/Q4545823","display_name":"1-planar graph","level":4,"score":0.2948276400566101},{"id":"https://openalex.org/C203776342","wikidata":"https://www.wikidata.org/wiki/Q1378376","display_name":"Line graph","level":3,"score":0.26570868492126465},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1007/pl00009250","is_oa":false,"landing_page_url":"https://doi.org/10.1007/pl00009250","pdf_url":null,"source":{"id":"https://openalex.org/S89324355","display_name":"Algorithmica","issn_l":"0178-4617","issn":["0178-4617","1432-0541"],"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":"Algorithmica","raw_type":"journal-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.47.1113","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.47.1113","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"ftp://parcftp.xerox.com/pub/gilbert/csl9207.ps.Z","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.50.7355","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.50.7355","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.dcs.warwick.ac.uk/~hristo/papers/multiple-weight.ps.gz","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W48500573","https://openalex.org/W1972094496","https://openalex.org/W1982180670","https://openalex.org/W2009702759","https://openalex.org/W2017223622","https://openalex.org/W2029282358","https://openalex.org/W2031198637","https://openalex.org/W2038643780","https://openalex.org/W2041372264","https://openalex.org/W2051758697","https://openalex.org/W2073558110","https://openalex.org/W2090129250","https://openalex.org/W2113679823","https://openalex.org/W2131853665","https://openalex.org/W2149977307","https://openalex.org/W2152377721","https://openalex.org/W2786884778"],"related_works":["https://openalex.org/W2963009577","https://openalex.org/W2788975631","https://openalex.org/W2157783000","https://openalex.org/W2903402681","https://openalex.org/W4283803822","https://openalex.org/W4287117052","https://openalex.org/W4206705200","https://openalex.org/W3176308333","https://openalex.org/W2966902162","https://openalex.org/W2061237693"],"abstract_inverted_index":null,"counts_by_year":[{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":1}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}