{"id":"https://openalex.org/W2057514951","doi":"https://doi.org/10.1007/s00454-007-1346-3","title":"The Hadwiger Number of Jordan Regions Is Unbounded","display_name":"The Hadwiger Number of Jordan Regions Is Unbounded","publication_year":2007,"publication_date":"2007-04-26","ids":{"openalex":"https://openalex.org/W2057514951","doi":"https://doi.org/10.1007/s00454-007-1346-3","mag":"2057514951"},"language":"en","primary_location":{"id":"doi:10.1007/s00454-007-1346-3","is_oa":true,"landing_page_url":"https://doi.org/10.1007/s00454-007-1346-3","pdf_url":"https://link.springer.com/content/pdf/10.1007/s00454-007-1346-3.pdf","source":{"id":"https://openalex.org/S103671469","display_name":"Discrete & Computational Geometry","issn_l":"0179-5376","issn":["0179-5376","1432-0444"],"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":"Discrete &amp; Computational Geometry","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://link.springer.com/content/pdf/10.1007/s00454-007-1346-3.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5091366247","display_name":"Otfried Cheong","orcid":"https://orcid.org/0000-0003-4467-7075"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Otfried Cheong","raw_affiliation_strings":["Division of Computer Science, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea","Division of Computer Science, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea#TAB#"],"affiliations":[{"raw_affiliation_string":"Division of Computer Science, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea","institution_ids":["https://openalex.org/I157485424"]},{"raw_affiliation_string":"Division of Computer Science, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea#TAB#","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101799263","display_name":"Mira Lee","orcid":"https://orcid.org/0000-0003-1805-3576"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Mira Lee","raw_affiliation_strings":["Division of Computer Science, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea","Division of Computer Science, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea#TAB#"],"affiliations":[{"raw_affiliation_string":"Division of Computer Science, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea","institution_ids":["https://openalex.org/I157485424"]},{"raw_affiliation_string":"Division of Computer Science, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea#TAB#","institution_ids":["https://openalex.org/I157485424"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5091366247"],"corresponding_institution_ids":["https://openalex.org/I157485424"],"apc_list":{"value":2290,"currency":"EUR","value_usd":2890},"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.14873782,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"37","issue":"4","first_page":"497","last_page":"501"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10588","display_name":"Mathematical Dynamics and Fractals","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2610","display_name":"Mathematical Physics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10588","display_name":"Mathematical Dynamics and Fractals","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2610","display_name":"Mathematical Physics"},"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/T12812","display_name":"Meromorphic and Entire Functions","score":0.996399998664856,"subfield":{"id":"https://openalex.org/subfields/2604","display_name":"Applied Mathematics"},"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/T12504","display_name":"Mathematics and Applications","score":0.9944999814033508,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/disjoint-sets","display_name":"Disjoint sets","score":0.8731308579444885},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.8268845081329346},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.7826031446456909},{"id":"https://openalex.org/keywords/pairwise-comparison","display_name":"Pairwise comparison","score":0.6120970845222473},{"id":"https://openalex.org/keywords/planar","display_name":"Planar","score":0.53311687707901},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3357105851173401},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.08486807346343994}],"concepts":[{"id":"https://openalex.org/C45340560","wikidata":"https://www.wikidata.org/wiki/Q215382","display_name":"Disjoint sets","level":2,"score":0.8731308579444885},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.8268845081329346},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.7826031446456909},{"id":"https://openalex.org/C184898388","wikidata":"https://www.wikidata.org/wiki/Q1435712","display_name":"Pairwise comparison","level":2,"score":0.6120970845222473},{"id":"https://openalex.org/C134786449","wikidata":"https://www.wikidata.org/wiki/Q3391255","display_name":"Planar","level":2,"score":0.53311687707901},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3357105851173401},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.08486807346343994},{"id":"https://openalex.org/C121684516","wikidata":"https://www.wikidata.org/wiki/Q7600677","display_name":"Computer graphics (images)","level":1,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1007/s00454-007-1346-3","is_oa":true,"landing_page_url":"https://doi.org/10.1007/s00454-007-1346-3","pdf_url":"https://link.springer.com/content/pdf/10.1007/s00454-007-1346-3.pdf","source":{"id":"https://openalex.org/S103671469","display_name":"Discrete & Computational Geometry","issn_l":"0179-5376","issn":["0179-5376","1432-0444"],"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":"Discrete &amp; Computational Geometry","raw_type":"journal-article"},{"id":"pmh:oai:koasas.kaist.ac.kr:10203/300","is_oa":false,"landing_page_url":"http://hdl.handle.net/10203/300","pdf_url":null,"source":{"id":"https://openalex.org/S4306402435","display_name":"KAIST Institutional Repository (KAIST)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I157485424","host_organization_name":"Korea Advanced Institute of Science and Technology","host_organization_lineage":["https://openalex.org/I157485424"],"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":{"id":"doi:10.1007/s00454-007-1346-3","is_oa":true,"landing_page_url":"https://doi.org/10.1007/s00454-007-1346-3","pdf_url":"https://link.springer.com/content/pdf/10.1007/s00454-007-1346-3.pdf","source":{"id":"https://openalex.org/S103671469","display_name":"Discrete & Computational Geometry","issn_l":"0179-5376","issn":["0179-5376","1432-0444"],"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":"Discrete &amp; Computational Geometry","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2057514951.pdf","grobid_xml":"https://content.openalex.org/works/W2057514951.grobid-xml"},"referenced_works_count":9,"referenced_works":["https://openalex.org/W1539895965","https://openalex.org/W1972427580","https://openalex.org/W1979456048","https://openalex.org/W1979961546","https://openalex.org/W2116736896","https://openalex.org/W2326931115","https://openalex.org/W2914501884","https://openalex.org/W4249258630","https://openalex.org/W6643388894"],"related_works":["https://openalex.org/W2487162673","https://openalex.org/W2942366970","https://openalex.org/W2793211469","https://openalex.org/W1971174658","https://openalex.org/W2949152769","https://openalex.org/W4372354731","https://openalex.org/W2562400057","https://openalex.org/W2020053772","https://openalex.org/W2035433397","https://openalex.org/W1553466895"],"abstract_inverted_index":null,"counts_by_year":[{"year":2017,"cited_by_count":1}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}
