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2005年11月04日

【期刊论文】Cubic Form Methods and Relative Tchebychev Hypersurfaces

刘会立, A.-M. LI, H. L. LIU, A. SCHWENK-SCHELLSCHMIDT, U. SIMON and C. P. WANG*

Geometriae Dedicata 66: 203-221, 1997.,-0001,():

-1年11月30日

摘要

We introduce the concept of a relative Tchebychev hypersurface which extends that of affine spheres in equiaffine geometry and also that of centroaffine Tchebychev hypersurfaces and give partial local and global classifications for this new class. Our tools concern a new operator and interesting properties of the traceless part of the cubic form.

Tchebychev hypersurface,, relative geometry,, hyperovaloid,, cubic form.,

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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】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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