Rchr
J-GLOBAL ID:201401007757659207
Update date: Dec. 19, 2023
Okumura Hiroshi
オクムラ ヒロシ | Okumura Hiroshi
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Affiliation and department:
旧所属 前橋工科大学 生命情報学科,大学院工学研究科 システム情報工学専攻
About 旧所属 前橋工科大学 生命情報学科,大学院工学研究科 システム情報工学専攻
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Job title:
教授
Homepage URL (1):
https://www.researchgate.net/profile/Hiroshi-Okumura
Research field (1):
Geometry
Research keywords (5):
Division by zero
, Computer discovered mathematics
, origami
, Wasan geometry, sangaku
, arbelos
Papers (182):
Hiroshi Okumura, Dao Thanh Oai. Twin circles of a generalized arbelos with division by zero 1/0 = 0. Sangaku Journal of Mathematics. 2023. 7. 146-150
Hiroshi Okumura. Enomoto's problem in Wasan geometry. Mathematical Gazette. 2023. 107. 39. 514-516
Hiroshi Okumura. A configuration arising from Problem 2023-1-1. Sangaku Journal of Mathematics. 2023. 7. 32-34
Hiroshi Okumura, Kousik Sett. The arbelos in Wasan geometry: the Aida arbelos and Problem 2023-1-5. Sangaku Journal of Mathematics. 2023. 7. 29-31
Hiroshi Okumura. A rare sangaku problem involving three congruent circles. Sangaku Journal of Mathematics. 2023. 7. 1-8
more...
MISC (50):
Hiroshi Okumura. Mutually touching three semicircles inscribing in a circle. Shotoh Sugaku. 2023. 95. 36-37
Hiroshi Okumura. Problems 2023-1. Sangaku Journal of Mathematics. 2023. 7. 9-12
Hiroshi Okumura. A sangaku with five problems presenting the relation z^2=4xy: Part 3. Shotoh Sugaku. 2022. 93. 20-23
Hiroshi Okumura. Exposition on the problem 91-1. Shotoh Sugaku. 2021. 92. 95-99
Hiroshi Okumura. A sangaku with five problems presenting the relation z^2=4xy: Part 2. Shotoh Sugaku. 2021. 92. 18-22
more...
Books (6):
Handbook of the mathematics of the arts and sciences
Springer 2021 ISBN:9783319570716
アルベロス 3つの半円がつくる幾何宇宙
岩波書店 2010
Origami3 : Third International Meeting of Origami Science, Mathematics, and Education sponsored by OrigamiUSA
A.K. Peters 2002 ISBN:1568811810
CD-ROM和算書集成 : 中曽根宗邡コレクション
岩波書店 2001 ISBN:4001301431
情報・システム入門
東京図書 1996
more...
Lectures and oral presentations (1):
Twin circles in a triangle and its application to an arbelos
(International Conference "Synergetics and reflection in mathematics education", At Bachinovo, Bulgaria 2010)
Professional career (2):
Ph.D. (Bulgarian Academy of Sciences)
理学修士 (岡山大学)
Awards (1):
2003 - 日本数学史学会 桑原賞
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