Search Results - "Kokubu, Masatoshi"

Flat fronts with polyhedral symmetry in hyperbolic three-space by Kokubu, Masatoshi

“…Flat fronts with symmetry similar to regular polyhedrons are studied. A flat front is a flat surface in hyperbolic three-space admitting a certain kind of…”
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Surfaces with concentric or parallel K-contours by Fujimori, Shoichi, Kawakami, Yu, Kokubu, Masatoshi

“…Surfaces with concentric K -contours and parallel K -contours in Euclidean 3-space are defined. Crucial examples are presented and characterization of them are…”
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Entire zero-mean curvature graphs of mixed type in Lorentz–Minkowski 3-space by Fujimori, Shoichi, Kawakami, Yu, Kokubu, Masatoshi, Rossman, Wayne, Umehara, Masaaki, Yamada, Kotaro

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Singularities of flat fronts in hyperbolic space by KOKUBU, Masatoshi, ROSSMAN, Wayne, SAJI, Kentaro, UMEHARA, Masaaki, YAMADA, Kotaro

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Orientability of linear Weingarten surfaces, spacelike CMC-1 surfaces and maximal surfaces by Kokubu, Masatoshi, Umehara, Masaaki

“…We prove several topological properties of linear Weingarten surfaces of Bryant type, as wave fronts in hyperbolic 3‐space. For example, we show the…”
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Addendum: Singularities of flat fronts in hyperbolic space by Kokubu, Masatoshi, Rossman, Wayne, Saji, Kentaro, Umehara, Masaaki, Yamada, Kotaro

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Mixed type surfaces with bounded mean curvature in 3-dimensional space-times by Honda, Atsufumi, Koiso, Miyuki, Kokubu, Masatoshi, Umehara, Masaaki, Yamada, Kotaro

“…In this paper, we shall prove that space-like surfaces with bounded mean curvature functions in real analytic Lorentzian 3-manifolds can change their causality…”
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Surfaces with concentric or parallel $K$-contours by Fujimori, Shoichi, Kawakami, Yu, Kokubu, Masatoshi

“…Surfaces with concentric $K$-contours and parallel $K$-contours in Euclidean $3$-space are defined. Crucial examples are presented and characterization of them…”
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Application of a unified Kenmotsu-type formula for surfaces in Euclidean or Lorentzian three-space by Kokubu, Masatoshi

“…Kenmotsu's formula describes surfaces in Euclidean 3-space by their mean curvature functions and Gauss maps. In Lorentzian 3-space, Akutagawa-Nishikawa's…”
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Quadrics and Scherk towers by Fujimori, S., Hertrich-Jeromin, U., Kokubu, M., Umehara, M., Yamada, K.

“…We investigate the relation between quadrics and their Christoffel duals on the one hand, and certain zero mean curvature surfaces and their Gauss maps on the…”
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Flat fronts in hyperbolic 3-space by KOKUBU, Masatoshi, UMEHARA, Masaaki, YAMADA, Kotaro

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Analytic extensions of constant mean curvature one geometric catenoids in de Sitter 3-space by Fujimori, Shoichi, Kawakami, Yu, Kokubu, Masatoshi, Rossman, Wayne, Umehara, Masaaki, Yamada, Kotaro, Yang, Seong-Deog

“…We show that a certain simply-stated notion of "analytic completeness" of the image of a real analytic map implies the map admits no analytic extension. We…”
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Mixed type surfaces with bounded mean curvature in 3-dimensional space-times by Honda, Atsufumi, Koiso, Miyuki, Kokubu, Masatoshi, Umehara, Masaaki, Yamada, Kotaro

“…In this paper, we shall prove that space-like surfaces with bounded mean curvature functions in real analytic Lorentzian 3-manifolds can change their causality…”
Get full text

Surfaces and fronts with harmonic-mean curvature one in hyperbolic three-space by Kokubu, Masatoshi

“…We investigate surfaces with constant harmonic-mean curvature one (HMC-1 surfaces) in hyperbolic three-space. We allow them to have certain kinds of…”
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Orientability of linear Weingarten surfaces, spacelike CMC-1 surfaces and maximal surfaces by Kokubu, Masatoshi, Umehara, Masaaki

“…We prove several topological properties of linear Weingarten surfaces of Bryant type, as wave fronts in hyperbolic 3-space. For example, we show the…”
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Quadrics and Scherk towers by Fujimori, Shoichi, Hertrich-Jeromin, Udo, Kokubu, Masatoshi, Umehara, Masaaki, Yamada, Kotaro

“…We investigate the relation between quadrics and their Christoffel duals on the one hand, and certain zero mean curvature surfaces and their Gauss maps on the…”
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Zero mean curvature entire graphs of mixed type in Lorentz-Minkowski 3-space by Fujimori, Shoichi, Kawakami, Yu, Kokubu, Masatoshi, Rossman, Wayne, Umehara, Masaaki, Yamada, Kotaro

“…It is classically known that the only zero mean curvature entire graphs in the Euclidean 3-space are planes, by Bernstein's theorem. A surface in…”
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Analytic extension of Jorge-Meeks type maximal surfaces in Lorentz-Minkowski 3-space by Fujimori, Shoichi, Kawakami, Yu, Kokubu, Masatoshi, Rossman, Wayne, Umehara, Masaaki, Yamada, Kotaro

“…The Jorge-Meeks $n$-noid ($n\ge 2$) is a complete minimal surface of genus zero with $n$ catenoidal ends in the Euclidean 3-space $\boldsymbol{R}^3$, which has…”
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Analytic extension of exceptional constant mean curvature one catenoids in de Sitter 3-space by Fujimori, Shoichi, Kawakami, Yu, Kokubu, Masatoshi, Rossman, Wayne, Umehara, Masaaki, Yamada, Kotaro

“…Catenoids in de Sitter $3$-space $S^3_1$ belong to a certain class of space-like constant mean curvature one surfaces. In a previous work, the authors…”
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ON MINIMAL SUBMANIFOLDS IN PRODUCT MANIFOLDS WITH A CERTAIN RIEMANNIAN METRIC by Kokubu, Masatoshi

“…We generalize Ejiri's theorem about minimal submanifolds in warped product manifolds and see that there exist minimal immersions of the plane and the catenoid…”
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