{"id":"https://openalex.org/A5064823367","orcid":"https://orcid.org/0000-0003-1289-5182","observed_orcids":["https://orcid.org/0000-0003-1289-5182"],"display_name":"Masato Fujita","raw_author_names":["Fujita, Masato","M. Fujita","MASATO FUJITA","Masato FUJITA","Masato Fujita"],"full_name":"Fujita, Masato","works_count":51,"cited_by_count":117,"summary_stats":{"2yr_mean_citedness":0.6,"h_index":6,"i10_index":4},"ids":{"openalex":"https://openalex.org/A5064823367","orcid":"https://orcid.org/0000-0003-1289-5182","observed_orcids":["https://orcid.org/0000-0003-1289-5182"]},"affiliations":[{"institution":{"id":"https://openalex.org/I146399215","ror":"https://ror.org/02956yf07","display_name":"University of Tsukuba","country_code":"JP","type":"education","lineage":["https://openalex.org/I146399215"]},"years":[2022]},{"institution":{"id":"https://openalex.org/I22299242","ror":"https://ror.org/02kpeqv85","display_name":"Kyoto University","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]},"years":[2006,2004,2003]},{"institution":{"id":"https://openalex.org/I4210086285","ror":"https://ror.org/000050t83","display_name":"Electronic Navigation Research Institute","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210086285","https://openalex.org/I4405284002"]},"years":[2013,2006]},{"institution":{"id":"https://openalex.org/I4405255641","ror":"https://ror.org/0387g1t09","display_name":"Japan Institute of Navigation","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4405255641"]},"years":[2006]},{"institution":{"id":"https://openalex.org/I4405286211","ror":"https://ror.org/01f136p21","display_name":"Research Center for Management of Disaster and Environment, Tokushima University","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4405286211","https://openalex.org/I922474255"]},"years":[2007]},{"institution":{"id":"https://openalex.org/I57772034","ror":"https://ror.org/03qa1nk44","display_name":"Japan Coast Guard Academy","country_code":"JP","type":"education","lineage":["https://openalex.org/I1308952385","https://openalex.org/I4387155174","https://openalex.org/I57772034"]},"years":[2025,2024,2023,2022,2021,2020,2019,2018,2017]},{"institution":{"id":"https://openalex.org/I75198481","ror":"https://ror.org/05wr49d48","display_name":"Wakayama University","country_code":"JP","type":"education","lineage":["https://openalex.org/I75198481"]},"years":[2024,2022]},{"institution":{"id":"https://openalex.org/I922474255","ror":"https://ror.org/044vy1d05","display_name":"Tokushima University","country_code":"JP","type":"education","lineage":["https://openalex.org/I922474255"]},"years":[2007]}],"last_known_institutions":[{"id":"https://openalex.org/I57772034","ror":"https://ror.org/03qa1nk44","display_name":"Japan Coast Guard Academy","country_code":"JP","type":"education","lineage":["https://openalex.org/I1308952385","https://openalex.org/I4387155174","https://openalex.org/I57772034"]}],"topics":[{"id":"https://openalex.org/T11151","display_name":"Advanced Topology and Set Theory","count":40,"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/T13400","display_name":"Mathematical and Theoretical Analysis","count":34,"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/T10061","display_name":"Algebraic Geometry and Number Theory","count":27,"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/T11703","display_name":"Rings, Modules, and Algebras","count":14,"subfield":{"id":"https://openalex.org/subfields/2602","display_name":"Algebra and Number Theory"},"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/T11545","display_name":"Advanced Banach Space Theory","count":6,"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"}}],"topic_share":[{"id":"https://openalex.org/T13400","display_name":"Mathematical and Theoretical Analysis","value":0.0002277,"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/T11151","display_name":"Advanced Topology and Set Theory","value":0.0001796,"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/T11703","display_name":"Rings, Modules, and Algebras","value":8.21e-05,"subfield":{"id":"https://openalex.org/subfields/2602","display_name":"Algebra and Number Theory"},"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/T10061","display_name":"Algebraic Geometry and Number Theory","value":6.95e-05,"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/T12069","display_name":"Commutative Algebra and Its Applications","value":4.17e-05,"subfield":{"id":"https://openalex.org/subfields/2602","display_name":"Algebra and Number Theory"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","score":0.9370646476745605},{"id":"114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","score":0.7277447581291199},{"id":"41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","score":0.6559334993362427},{"id":"202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","score":0.6130470037460327},{"id":"118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","score":0.4763999879360199}],"counts_by_year":[{"year":2003,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2004,"works_count":3,"oa_works_count":3,"cited_by_count":0},{"year":2006,"works_count":3,"oa_works_count":3,"cited_by_count":0},{"year":2007,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":1},{"year":2013,"works_count":1,"oa_works_count":1,"cited_by_count":1},{"year":2017,"works_count":3,"oa_works_count":3,"cited_by_count":3},{"year":2018,"works_count":1,"oa_works_count":0,"cited_by_count":2},{"year":2019,"works_count":2,"oa_works_count":2,"cited_by_count":1},{"year":2020,"works_count":5,"oa_works_count":5,"cited_by_count":8},{"year":2021,"works_count":5,"oa_works_count":5,"cited_by_count":15},{"year":2022,"works_count":3,"oa_works_count":3,"cited_by_count":13},{"year":2023,"works_count":7,"oa_works_count":7,"cited_by_count":17},{"year":2024,"works_count":7,"oa_works_count":7,"cited_by_count":20},{"year":2025,"works_count":8,"oa_works_count":7,"cited_by_count":23},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":6}],"display_name_alternatives":["Fujita, Masato","M. Fujita","MASATO FUJITA","Masato FUJITA","Masato Fujita"],"block_key":"m fujita","works_api_url":"https://api.openalex.org/works?filter=author.id:A5064823367","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5064823367","updated_date":"2026-11-12T13:17:38","created_date":"2016-06-24T00:00:00"}
