Researcher List Akira USHIJIMA Akira USHIJIMA (牛島 顕) Please select the form format to download from below 「Education and research environment」format 「No. 4, the Ministry of Education document style ①Outline for Vitae」format 「No. 4, the Ministry of Education document style ②Education and research environment」format Profile Information Affiliationprofessor, School of Economics and Management, University of HyogoDegreeDoctor of Science(Osaka University)Master of Science(Osaka University)Bachelor of Science(Osaka University)J-GLOBAL ID200901054659734614researchmap Member ID1000321732 Research Interests 4 双曲幾何学 低次元位相幾何学 hyperbolic geometry low-dimensional topology Research History 9 Apr, 2022 - Present professor, School of Economics and Management, University of Hyogo Apr, 2008 - Mar, 2022 associate professor, Institute of Science and Engineering, Faculty of Mathematics and Physics, Kanazawa University Apr, 2007 - Mar, 2008 Graduate School of Natural Science and Technology, Kanazawa University Apr, 2004 - Mar, 2007 Graduate School of Natural Science and Technology, Kanazawa University Aug, 2003 - Jul, 2005 海外特別研究員, 日本学術振興会 More Papers 1 Theorem of three squares across three geometries Kazuhiro Ichihara, Akira Ushijima The Mathematical Gazette, 1-7, Jan 21, 2026 Peer-reviewed Misc. 8 金沢大学におけるWeBWorKの導入事例について 牛島 顕 数学通信, 25(4) 69-73, Feb, 2021 Invited WebClassと数学の宿題システム「WeBWorK」の連携 牛島 顕 Aug, 2016 Rational-fold branched coverings and hyperbolic spatial graphs(Complex Analysis and Geometry of Hyperbolic Spaces) ICHIHARA Kazuhiro, USHIJIMA Akira RIMS Kokyuroku, 1518 97-104, Oct, 2006 A volume formula for hyperbolic tetrahedra and a problem of Fenchel (Perspectives of Hyperbolic Spaces) Ushijima Akira RIMS Kokyuroku, 1329 139-150, Jun, 2003 Hyperbolic spatial graphs arising from torus knots (Hyperbolic Spaces and Discrete Groups) Ushijima Akira RIMS Kokyuroku, 1223 119-126, Jul, 2001 More Books and Other Publications 1 曲がった世界の三角形の定理たち : 非ユークリッド幾何学入門 市原, 一裕, 牛島, 顕 (Role: Joint author) 技術評論社, Jan, 2024 (ISBN: 9784297139452) Presentations 9 Pennerのλ-lengthとその一般化について 牛島顕 Random topics on Teichmuller theory IV, Jan 29, 2026 Invited 実射影幾何学から導かれる、双曲三角形の性質 牛島顕 兵庫県立大学数学談話会, Nov 7, 2024 Invited チェバの定理と三角群の基本領域 牛島顕 拡大版「リーマン面・不連続群論」研究集会, Mar 5, 2024 Invited ケーリー・クライン幾何学としての双曲平面でのチェバの定理とメネラウスの定理 牛島顕 東工大函数論セミナー, Jun 30, 2023 Invited オンライン計算ドリルWeBWorKの紹介と活用 牛島 顕 Risa/Asir Conference 2021, Mar 21, 2021 Invited More Research Projects 4 Various inbariants appearing in low-dimensional topology Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2003 - 2006 MURAKAMI Hitoshi, TERASHIMA Yuji, ISHIKAWA Masaharu, KITANO Teruaki, USHIJIMA Akira, ENDO Hisaaki Convergence of metric measure spaces and energy forms Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2003 - 2005 KASUE Atsushi, NAKAO Shintaro, TAKANOBU Satoshi, USHIJIMA Akira, NAKAGAWA Yasuhiro, KATO Shin Study of analogies between algebraic number theory and 3-dimensional topology. Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2003 - 2004 MORISHITA Masanori, KURIHARA Masato, TAGUCHI Yuichiro, KOHNO Toshitake, SUGANO Takashi, USHIJIMA Akira Faddeev-Hopf結び目の研究 科学研究費助成事業, 日本学術振興会, 2000 - 2001 村上 斉, 本間 泰史, 落合 啓之, 牛島 顕, 鈴木 達夫, 筧 三郎
Akira USHIJIMA (牛島 顕) Please select the form format to download from below 「Education and research environment」format 「No. 4, the Ministry of Education document style ①Outline for Vitae」format 「No. 4, the Ministry of Education document style ②Education and research environment」format Profile Information Affiliationprofessor, School of Economics and Management, University of HyogoDegreeDoctor of Science(Osaka University)Master of Science(Osaka University)Bachelor of Science(Osaka University)J-GLOBAL ID200901054659734614researchmap Member ID1000321732 Research Interests 4 双曲幾何学 低次元位相幾何学 hyperbolic geometry low-dimensional topology Research History 9 Apr, 2022 - Present professor, School of Economics and Management, University of Hyogo Apr, 2008 - Mar, 2022 associate professor, Institute of Science and Engineering, Faculty of Mathematics and Physics, Kanazawa University Apr, 2007 - Mar, 2008 Graduate School of Natural Science and Technology, Kanazawa University Apr, 2004 - Mar, 2007 Graduate School of Natural Science and Technology, Kanazawa University Aug, 2003 - Jul, 2005 海外特別研究員, 日本学術振興会 More Papers 1 Theorem of three squares across three geometries Kazuhiro Ichihara, Akira Ushijima The Mathematical Gazette, 1-7, Jan 21, 2026 Peer-reviewed Misc. 8 金沢大学におけるWeBWorKの導入事例について 牛島 顕 数学通信, 25(4) 69-73, Feb, 2021 Invited WebClassと数学の宿題システム「WeBWorK」の連携 牛島 顕 Aug, 2016 Rational-fold branched coverings and hyperbolic spatial graphs(Complex Analysis and Geometry of Hyperbolic Spaces) ICHIHARA Kazuhiro, USHIJIMA Akira RIMS Kokyuroku, 1518 97-104, Oct, 2006 A volume formula for hyperbolic tetrahedra and a problem of Fenchel (Perspectives of Hyperbolic Spaces) Ushijima Akira RIMS Kokyuroku, 1329 139-150, Jun, 2003 Hyperbolic spatial graphs arising from torus knots (Hyperbolic Spaces and Discrete Groups) Ushijima Akira RIMS Kokyuroku, 1223 119-126, Jul, 2001 More Books and Other Publications 1 曲がった世界の三角形の定理たち : 非ユークリッド幾何学入門 市原, 一裕, 牛島, 顕 (Role: Joint author) 技術評論社, Jan, 2024 (ISBN: 9784297139452) Presentations 9 Pennerのλ-lengthとその一般化について 牛島顕 Random topics on Teichmuller theory IV, Jan 29, 2026 Invited 実射影幾何学から導かれる、双曲三角形の性質 牛島顕 兵庫県立大学数学談話会, Nov 7, 2024 Invited チェバの定理と三角群の基本領域 牛島顕 拡大版「リーマン面・不連続群論」研究集会, Mar 5, 2024 Invited ケーリー・クライン幾何学としての双曲平面でのチェバの定理とメネラウスの定理 牛島顕 東工大函数論セミナー, Jun 30, 2023 Invited オンライン計算ドリルWeBWorKの紹介と活用 牛島 顕 Risa/Asir Conference 2021, Mar 21, 2021 Invited More Research Projects 4 Various inbariants appearing in low-dimensional topology Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2003 - 2006 MURAKAMI Hitoshi, TERASHIMA Yuji, ISHIKAWA Masaharu, KITANO Teruaki, USHIJIMA Akira, ENDO Hisaaki Convergence of metric measure spaces and energy forms Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2003 - 2005 KASUE Atsushi, NAKAO Shintaro, TAKANOBU Satoshi, USHIJIMA Akira, NAKAGAWA Yasuhiro, KATO Shin Study of analogies between algebraic number theory and 3-dimensional topology. Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2003 - 2004 MORISHITA Masanori, KURIHARA Masato, TAGUCHI Yuichiro, KOHNO Toshitake, SUGANO Takashi, USHIJIMA Akira Faddeev-Hopf結び目の研究 科学研究費助成事業, 日本学術振興会, 2000 - 2001 村上 斉, 本間 泰史, 落合 啓之, 牛島 顕, 鈴木 達夫, 筧 三郎