Acta Mathematica Sinica

, Volume 12, Issue 4, pp 379–384 | Cite as

A remark on the symplectic blow-up in dimension 4

  • Ma Renyi
Article
  • 35 Downloads

Abstract

In this note, we prove that the symplectic blow-up or blow-down in the dimension 4 is rigid, i.e. the symplectic area of the divisor does not exceed the symplectic radius of the neighbourhood on which we do the blow-up or blow-down.

Keywords

J-Holomorphic disc Contact manifold Symplectic blow-up 

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Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • Ma Renyi
    • 1
  1. 1.Department of Applied MathematicsTsinghua UniversityBeijingChina

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