{"id":"https://openalex.org/W1889872997","doi":"https://doi.org/10.1007/3-540-57811-0_4","title":"Some open problems in approximation","display_name":"Some open problems in approximation","publication_year":1994,"publication_date":"1994-01-01","ids":{"openalex":"https://openalex.org/W1889872997","doi":"https://doi.org/10.1007/3-540-57811-0_4","mag":"1889872997"},"language":"en","primary_location":{"id":"doi:10.1007/3-540-57811-0_4","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-57811-0_4","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"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":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"conference-paper","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/A5043084405","display_name":"Mihalis Yannakakis","orcid":"https://orcid.org/0000-0003-2857-1860"},"institutions":[{"id":"https://openalex.org/I1283103587","display_name":"AT&T (United States)","ror":"https://ror.org/02bbd5539","country_code":"US","type":"company","lineage":["https://openalex.org/I1283103587"]},{"id":"https://openalex.org/I72090969","display_name":"Nokia (United States)","ror":"https://ror.org/038km2573","country_code":"US","type":"company","lineage":["https://openalex.org/I2738502077","https://openalex.org/I72090969"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Mihalis Yannakakis","raw_affiliation_strings":["AT&T Bell Laboratories, 07974, Murray Hill, NJ","AT&T Bell Labs.,Murray Hill, NJ"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"AT&T Bell Laboratories, 07974, Murray Hill, NJ","institution_ids":["https://openalex.org/I1283103587"]},{"raw_affiliation_string":"AT&T Bell Labs.,Murray Hill, NJ","institution_ids":["https://openalex.org/I72090969"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5043084405"],"corresponding_institution_ids":["https://openalex.org/I1283103587","https://openalex.org/I72090969"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":0.6784,"has_fulltext":false,"cited_by_count":14,"citation_normalized_percentile":{"value":0.61009174,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"33","last_page":"39"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10720","display_name":"Complexity and Algorithms in Graphs","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/T10720","display_name":"Complexity and Algorithms in Graphs","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/T10996","display_name":"Computational Geometry and Mesh Generation","score":0.9991999864578247,"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"}},{"id":"https://openalex.org/T10374","display_name":"Advanced Graph Theory Research","score":0.9969000220298767,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7945059537887573}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7945059537887573}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/3-540-57811-0_4","is_oa":false,"landing_page_url":"https://doi.org/10.1007/3-540-57811-0_4","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"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":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":59,"referenced_works":["https://openalex.org/W14781978","https://openalex.org/W192146155","https://openalex.org/W307896644","https://openalex.org/W1480903797","https://openalex.org/W1511716344","https://openalex.org/W1517125942","https://openalex.org/W1563577400","https://openalex.org/W1714357736","https://openalex.org/W1972345639","https://openalex.org/W1975218943","https://openalex.org/W1982761864","https://openalex.org/W1991006936","https://openalex.org/W2001564241","https://openalex.org/W2009803313","https://openalex.org/W2011039300","https://openalex.org/W2015092796","https://openalex.org/W2016232593","https://openalex.org/W2018279087","https://openalex.org/W2019886197","https://openalex.org/W2022630275","https://openalex.org/W2035610952","https://openalex.org/W2038225707","https://openalex.org/W2040924621","https://openalex.org/W2051937719","https://openalex.org/W2053548601","https://openalex.org/W2053651631","https://openalex.org/W2056090079","https://openalex.org/W2063836932","https://openalex.org/W2064600658","https://openalex.org/W2065161629","https://openalex.org/W2069702698","https://openalex.org/W2070664846","https://openalex.org/W2075662767","https://openalex.org/W2077783414","https://openalex.org/W2079473728","https://openalex.org/W2080905757","https://openalex.org/W2086917808","https://openalex.org/W2090487839","https://openalex.org/W2090863037","https://openalex.org/W2104254886","https://openalex.org/W2116940701","https://openalex.org/W2117319425","https://openalex.org/W2122753831","https://openalex.org/W2125278290","https://openalex.org/W2132258126","https://openalex.org/W2132605415","https://openalex.org/W2141355868","https://openalex.org/W2141815340","https://openalex.org/W2143391442","https://openalex.org/W2148043549","https://openalex.org/W2152221184","https://openalex.org/W2401610261","https://openalex.org/W2622192510","https://openalex.org/W2917997019","https://openalex.org/W4242370932","https://openalex.org/W4248492530","https://openalex.org/W4249532171","https://openalex.org/W4251581428","https://openalex.org/W6650788953"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2390279801","https://openalex.org/W2358668433","https://openalex.org/W2376932109","https://openalex.org/W2001405890","https://openalex.org/W2382290278","https://openalex.org/W2478288626","https://openalex.org/W4391913857","https://openalex.org/W2350741829","https://openalex.org/W2530322880"],"abstract_inverted_index":null,"counts_by_year":[{"year":2020,"cited_by_count":2},{"year":2017,"cited_by_count":2},{"year":2012,"cited_by_count":2}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}