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Minimal helix surfaces in N n ×ℝ

Minimal helix surfaces in N n ×ℝ An immersed surface M in N n ×ℝ is a helix if its tangent planes make constant angle with ∂ t . We prove that a minimal helix surface M, of arbitrary codimension is flat. If the codimension is one, it is totally geodesic. If the sectional curvature of N is positive, a minimal helix surfaces in N n ×ℝ is not necessarily totally geodesic. When the sectional curvature of N is nonpositive, then M is totally geodesic. In particular, minimal helix surfaces in Euclidean n-space are planes. We also investigate the case when M has parallel mean curvature vector: A complete helix surface with parallel mean curvature vector in Euclidean n-space is a plane or a cylinder of revolution. Finally, we use Eikonal f functions to construct locally any helix surface. In particular every minimal one can be constructed taking f with zero Hessian. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg Springer Journals

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References (15)

Publisher
Springer Journals
Copyright
Copyright © 2011 by Mathematisches Seminar der Universität Hamburg and Springer
Subject
Mathematics; Algebra; Geometry ; Topology; Number Theory; Combinatorics; Differential Geometry
ISSN
0025-5858
eISSN
1865-8784
DOI
10.1007/s12188-011-0052-5
Publisher site
See Article on Publisher Site

Abstract

An immersed surface M in N n ×ℝ is a helix if its tangent planes make constant angle with ∂ t . We prove that a minimal helix surface M, of arbitrary codimension is flat. If the codimension is one, it is totally geodesic. If the sectional curvature of N is positive, a minimal helix surfaces in N n ×ℝ is not necessarily totally geodesic. When the sectional curvature of N is nonpositive, then M is totally geodesic. In particular, minimal helix surfaces in Euclidean n-space are planes. We also investigate the case when M has parallel mean curvature vector: A complete helix surface with parallel mean curvature vector in Euclidean n-space is a plane or a cylinder of revolution. Finally, we use Eikonal f functions to construct locally any helix surface. In particular every minimal one can be constructed taking f with zero Hessian.

Journal

Abhandlungen aus dem Mathematischen Seminar der Universität HamburgSpringer Journals

Published: Mar 18, 2011

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