Constant mean curvature planes with inner rotational symmetry in Euclidean 3-space
Constant mean curvature planes with inner rotational symmetry in Euclidean 3-space
复制标题
欧几里得 3 空间中具有内旋转对称性的恒定平均曲率平面
DOI:
10.1007/bf02571730
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发表时间:
1994
影响因子:
0.8
通讯作者:
D. Ferus
中科院分区:
文献类型:
--
作者:
Martin Timmreck;U. Pinkall;D. Ferus
In conformal parameters the integrability condition for constant mean curvature (cmc) surfaces in Euclidean 3-space reduces to a sinh-Gordon equation for a single function (o representing the metric, see [2]. The existence of an intrinsic isometric Sl-action with a fixed point (similar to the one of Enneper's surface) gives reduction to an ODE of Painlev6-type. Using this, we prove that each nonspherical cmc-surface with the above property extends to a properly immersed cmc-surface with a single umbilic. For each order of this umbilic and fixed mean curvature H, there is essentially a 1-parameter family of such surfaces. By the same method one can study translational 1-parameter groups of isometries, see [3, 4], but we omit this. An earlier preprint of Smyth [-3] on the same subject did not answer the question of properness, and the classification contained some redundant parameters. The asymptotic behaviour of the surfaces is studied more thoroughly in a paper by Bobenko [5].