Masaru Hasegawa

ハセガワマサル | Masaru Hasegawa

Affiliation and department：

Research field (1)： Geometry

Research keywords (2)：微分幾何学 , 特異点

Research theme for competitive and other funds (1)：

2021 - 2024 Researches of profiles with singularities and that of singular surfaces

Papers (11)：

Masaru Hasegawa, Yutaro Kabata, Kentaro Saji. Capturing information on curves and surfaces from their projected images. International Journal of Mathematics for Industry. 2020. 2050004-2050004
Toshizumi Fukui, Masaru Hasegawa, Kouichi Nakagawa. Contact of a regular surface in Euclidean 3-space with cylinders and cubic binary differential equations. Journal of the Mathematical Society of Japan. 2017. 69. 2. 819-847
福井敏純, 長谷川大, 佐治健太郎. Extensions of Koenderink's formula. Journal of Gokova Geometry Topology. 2016. 10. 42-59
Masaru Hasegawa, Atsufumi Honda, Kosuke Naokawa, Kentaro Saji, Masaaki Umehara, Kotaro Yamada. Intrinsic properties of surfaces with singularities. INTERNATIONAL JOURNAL OF MATHEMATICS. 2015. 26. 4. 154008
Masaru Hasegawa, Atsufumi Honda, Kosuke Naokawa, Masaaki Umehara, Kotaro Yamada. Intrinsic invariants of cross caps. SELECTA MATHEMATICA-NEW SERIES. 2014. 20. 3. 769-785

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Lectures and oral presentations (18)：

On umbilic points on newly born surfaces
(可微分写像の特異点論とその応用 2016)
R^3内の曲面の輪郭線の幾何
(多様体上の微分方程式 2016)
曲面と円柱の接触と曲面の輪郭線
(第63回トポロジーシンポジウム 2016)
Parabolic, ridge and sub-parabolic curves of implicit surfaces with singularities
(2015年度日本数学会秋季総合分科会 2015)
R^3内の曲面と円柱の接触
(第62回幾何学シンポジウム 2015)

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Work history (2)：

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