{"id":"https://openalex.org/W2090568644","doi":"https://doi.org/10.1007/bf02521115","title":"Hankel operators and best Hankel approximation on the half-plane","display_name":"Hankel operators and best Hankel approximation on the half-plane","publication_year":1994,"publication_date":"1994-04-01","ids":{"openalex":"https://openalex.org/W2090568644","doi":"https://doi.org/10.1007/bf02521115","mag":"2090568644"},"language":"en","primary_location":{"id":"doi:10.1007/bf02521115","is_oa":false,"landing_page_url":"https://doi.org/10.1007/bf02521115","pdf_url":null,"source":{"id":"https://openalex.org/S57050787","display_name":"Advances in Computational Mathematics","issn_l":"1019-7168","issn":["1019-7168","1572-9044"],"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":"Advances in Computational 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/A5100353820","display_name":"Xin Li","orcid":"https://orcid.org/0000-0002-2243-3742"},"institutions":[{"id":"https://openalex.org/I133999245","display_name":"University of Nevada, Las Vegas","ror":"https://ror.org/0406gha72","country_code":"US","type":"education","lineage":["https://openalex.org/I133999245"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Xin Li","raw_affiliation_strings":["Department of Mathematical Sciences, University of Nevada at Las Vegas, 89154-4020, Las Vegas, NV, USA","Department of Mathematical Sciences, University of Nevada at Las Vegas, Las Vegas, USA"],"affiliations":[{"raw_affiliation_string":"Department of Mathematical Sciences, University of Nevada at Las Vegas, 89154-4020, Las Vegas, NV, USA","institution_ids":["https://openalex.org/I133999245"]},{"raw_affiliation_string":"Department of Mathematical Sciences, University of Nevada at Las Vegas, Las Vegas, USA","institution_ids":["https://openalex.org/I133999245"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5100353820"],"corresponding_institution_ids":["https://openalex.org/I133999245"],"apc_list":{"value":2390,"currency":"EUR","value_usd":2990},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.20869431,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"2","issue":"3","first_page":"343","last_page":"355"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11206","display_name":"Model Reduction and Neural Networks","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11206","display_name":"Model Reduction and Neural Networks","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10339","display_name":"Advanced Numerical Methods in Computational Mathematics","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10514","display_name":"Numerical methods in engineering","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/hankel-matrix","display_name":"Hankel matrix","score":0.901254415512085},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.7640228271484375},{"id":"https://openalex.org/keywords/hankel-transform","display_name":"Hankel transform","score":0.6739743947982788},{"id":"https://openalex.org/keywords/plane","display_name":"Plane (geometry)","score":0.6061711311340332},{"id":"https://openalex.org/keywords/unit","display_name":"Unit (ring theory)","score":0.5329813361167908},{"id":"https://openalex.org/keywords/complex-plane","display_name":"Complex plane","score":0.44532930850982666},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.40797796845436096},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.3299272358417511},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.2793319821357727},{"id":"https://openalex.org/keywords/bessel-function","display_name":"Bessel function","score":0.08623850345611572}],"concepts":[{"id":"https://openalex.org/C25023664","wikidata":"https://www.wikidata.org/wiki/Q1575637","display_name":"Hankel matrix","level":2,"score":0.901254415512085},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.7640228271484375},{"id":"https://openalex.org/C57640460","wikidata":"https://www.wikidata.org/wiki/Q155208","display_name":"Hankel transform","level":3,"score":0.6739743947982788},{"id":"https://openalex.org/C17825722","wikidata":"https://www.wikidata.org/wiki/Q17285","display_name":"Plane (geometry)","level":2,"score":0.6061711311340332},{"id":"https://openalex.org/C122637931","wikidata":"https://www.wikidata.org/wiki/Q118084","display_name":"Unit (ring theory)","level":2,"score":0.5329813361167908},{"id":"https://openalex.org/C179117685","wikidata":"https://www.wikidata.org/wiki/Q328998","display_name":"Complex plane","level":2,"score":0.44532930850982666},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.40797796845436096},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.3299272358417511},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.2793319821357727},{"id":"https://openalex.org/C107706756","wikidata":"https://www.wikidata.org/wiki/Q219637","display_name":"Bessel function","level":2,"score":0.08623850345611572},{"id":"https://openalex.org/C145420912","wikidata":"https://www.wikidata.org/wiki/Q853077","display_name":"Mathematics education","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/bf02521115","is_oa":false,"landing_page_url":"https://doi.org/10.1007/bf02521115","pdf_url":null,"source":{"id":"https://openalex.org/S57050787","display_name":"Advances in Computational Mathematics","issn_l":"1019-7168","issn":["1019-7168","1572-9044"],"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":"Advances in Computational 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":24,"referenced_works":["https://openalex.org/W256385507","https://openalex.org/W607804645","https://openalex.org/W651172151","https://openalex.org/W1505943803","https://openalex.org/W1576783654","https://openalex.org/W1582715874","https://openalex.org/W1800342776","https://openalex.org/W1967332578","https://openalex.org/W1984714339","https://openalex.org/W1988999371","https://openalex.org/W1995606407","https://openalex.org/W2013348732","https://openalex.org/W2013911232","https://openalex.org/W2016574513","https://openalex.org/W2017154474","https://openalex.org/W2036809929","https://openalex.org/W2047572071","https://openalex.org/W2053382522","https://openalex.org/W2137897092","https://openalex.org/W2314434379","https://openalex.org/W2495634290","https://openalex.org/W3149935745","https://openalex.org/W3216034703","https://openalex.org/W4240198037"],"related_works":["https://openalex.org/W1574625781","https://openalex.org/W2330799166","https://openalex.org/W2139768024","https://openalex.org/W881783402","https://openalex.org/W2042737795","https://openalex.org/W74469192","https://openalex.org/W2028837737","https://openalex.org/W2757898556","https://openalex.org/W3148685392","https://openalex.org/W4300552309"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}