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arXiv · 1111.1652

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

Costante Bellettini
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Abstract

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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Costante Bellettini. 2011-11-07. Uniqueness of Tangent Cones to Positive-(p,p) Integral Cycles. https://doi.org/10.1215/00127094-2429698

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