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2005年11月04日

【期刊论文】Hyperbolic Rotation Surfaces of Constant Mean Curvature in 3-de Sitter Space

刘会立, Huili Liu, Guili Liu

Bull. Belg. Math. Soc. 7 (2000), 455-466,-0001,():

-1年11月30日

摘要

In the 4-dimensional Minkowski space R41, a surface is said to be a hyperbolic rotation surface, if it is a orbit of a regular curve under the action of the orthogonal transformations of R41 which leave a spacelike plane pointwise xed. In this paper, we give the totally classi cation of the timelike and spacelike hyperbolic rotation surfaces in 3-dimensional de Sitter space S31.

de Sitter space,, timelike surface,, spacelike surface,, hyperbolic rotation surface,, constant mean curvature surface.,

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2005年11月04日

【期刊论文】Centroaffine Surfaces with parallel traceless Cubic Form

刘会立, Huili Liu, Changping Wang†

Bull. Belg. Math. Soc. 4 (1997), 493-499,-0001,():

-1年11月30日

摘要

In this paper, we classify the centroa ne surfaces with parallel cubic Simon form and the centroa ne minimal surfaces with complete positive de nite at metric.

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2005年11月04日

【期刊论文】Conformal Structure in Affne Geometry: Complete Tchebychev Hypersurfaces

刘会立, Huili Liu, Udo Simon, Changping Wang**

Abh. Math. Sem. Univ. Hamburg 66 (1996), 249-262,-0001,():

-1年11月30日

摘要

We give a conformal classification of affine-complete centroaffne Tchebychev hypersurfaces recently introduced by Liu and Wang. This classifica-tion is based on partial differential equations known from conformal Riemannian geometry. Moreover we investigate Tchebychev hyperovaloids and generalize the classical theorem of Blaschke and Deicke on a

conformal differential equation,, centroaffine Tchebychev hypersur-face,, affine spheres.,

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2005年11月04日

【期刊论文】Translation Surfaces with constant Mean Curvature in 3-dimensional Spaces

刘会立, Huili Liu*

J. Geom. 64 (1999), 141-149,-0001,():

-1年11月30日

摘要

We give the classiffcation of the translation surfaces with constant mean curvature or constant Gauss curvature in 3-dimensional Euclidean space E3 and 3-dimensional Minkowski space E31.

Keywords and phrases., Mean curvature,, translation surface,, spacelike surface,, timelike sur-face.,

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2005年11月04日

【期刊论文】RELATIVE TCHEBYCHEV SURFACES IN R3

刘会立, Huili Liu and Changping Wang

Kyushu J. Math. 50 (1996), 533-540,-0001,():

-1年11月30日

摘要

In this paper some interesting global properties of relative Tchebychev sur-faces in R3 are given. Blaschke's characterization of the ovaloid is generalized to relative differential geometry.

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    东北大学,辽宁

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