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manuscripta mathematica

, Volume 95, Issue 1, pp 159–168 | Cite as

Complex points of minimal surfaces in almost Kähler manifolds

  • Renyi Ma
Article
  • 38 Downloads

Abstract

If (N, ω, J, g) is an almost Kähler manifold andM is a branched minimal immersion which is not aJ-holomorphic curve, we show that the complex tangents are isolated and that each has a negative index, which extends the results in the Kähler case by S. S. Chern and J. Wolfson [2] and S. Webster [7] to almost Kähler manifolds. As an application, we get lower estimates for the genus of embedded minimal surfaces in almost Kähler manifolds. The proofs of these results are based on the well-known Cartan’s moving frame methods as in [2, 7]. In our case, we must compute the torsion of the almost complex structures and find a useful representation of torsion. Finally, we prove that the minimal surfaces in complex projective plane with any almost complex structure is aJ-holomorphic curve if it is homologous to the complex line.

Keywords

Minimal Surface Complex Point Minimal Immersion Frame Field Complex Tangent 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1998

Authors and Affiliations

  • Renyi Ma
    • 1
  1. 1.Department of Applied MathematicsTsinghua UniversityBeijingPeople’s Republic of China

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