English

Uniqueness of Tangent Cones to Positive-(p,p) Integral Cycles

Analysis of PDEs 2014-05-08 v1 Differential Geometry

Abstract

Let (M,\om)(M, \om) be a symplectic manifold, endowed with a compatible almost complex structure J and the associated metric g . For any p \in {1, 2, ... (dim M)/2} the form \Om:=\ompp!\Om := \frac{\om^p}{p!} is a calibration. More generally, dropping the closedness assumption on \om\om, we get an almost hermitian manifold (M,\om,J,g)(M, \om, J, g) and then \Om\Om is a so-called semi-calibration. We prove that integral cycles of dimension 2p (semi-)calibrated by \Om\Om possess at every point a unique tangent cone. The argument relies on an algebraic blow up perturbed in order to face the analysis issues of this problem in the almost complex setting.

Keywords

Cite

@article{arxiv.1111.1652,
  title  = {Uniqueness of Tangent Cones to Positive-(p,p) Integral Cycles},
  author = {Costante Bellettini},
  journal= {arXiv preprint arXiv:1111.1652},
  year   = {2014}
}

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22 pages