About Akamine Shintaro
About Department of Liberal Arts, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa, 252-0880, Japan
About Honda Atsufumi
About Department of Applied Mathematics, Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan
About Umehara Masaaki
About Department of Mathematical and Computing Sciences, Tokyo Institute of Technology, Tokyo 152-8552, Japan
About Yamada Kotaro
About Department of Mathematics, Tokyo Institute of Technology, Tokyo 152-8551, Japan
About Journal of Geometry and Physics
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About manifold(mathematics)
About geodetic line
About dipping
About hypersurface
About ヌルエネルギー条件
About ゼロエネルギー
About Null hypersurface
About Space-time
About Lorentzian manifold
About Null energy condition (NEC)
About General theory of relativity and theory of gravity
About エネルギー条件
About 多様体
About 超曲面