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

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

2011-11-07

arxiv.org/abs/1111.1652v1

Mathematics

Analysis of PDEs

22 pages

Scientific paper

Let $(M, \om)$ 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 $\Om := \frac{\om^p}{p!}$ is a calibration. More generally, dropping the closedness assumption on $\om$, we get an almost hermitian manifold $(M, \om, J, g)$ and then $\Om$ is a so-called semi-calibration. We prove that integral cycles of dimension 2p (semi-)calibrated by $\Om$ 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.

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