The Gauss Map of Hypersurfaces in 2-Step Nilpotent Lie Groups
Анотація
We consider smooth oriented hypersurfaces in 2-step nilpotent Lie groups with a left invariant metric. We derive an expression for the Laplacian of the Gauss map for such hypersurfaces in the general case and in some particular cases. In the case of CMC-hypersurface in the $(2m+1)$-dimensional Heisenberg group we also give necessary and sufficient conditions for the Gauss map to be harmonic and prove that for $m=1$ all CMC-surfaces with the harmonic Gauss map are "cylinders".
Mathematics Subject Classification: 53C40, 53C42, 53C43, 22E25.
Ключові слова:
2-step nilpotent Lie group, Heisenberg group, left invariant metric, Gauss map, harmonic map, minimal submanifold, constant mean curvatureDownloads
Як цитувати
(1)
Petrov, Y. V. The Gauss Map of Hypersurfaces in 2-Step Nilpotent Lie Groups. Журн. мат. фіз. анал. геом. 2006, 2, 186-206.
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