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Embedding more than 8 symplectic balls in $\mathbb{C}\mathrm{P}^2$

辛几何 2026-05-26 v1

摘要

We prove that the space of symplectic embeddings of n1n\geq 1 standard balls into the standard complex projective plane CP2\mathbb{C}\mathrm{P}^2 is homotopy equivalent to the configuration space of nn points in CP2\mathbb{C}\mathrm{P}^2, provided that the sum of the capacities of the balls is strictly less than the symplectic area of a line. Moreover, our techniques suggest that, for n=9n=9, there are infinitely many homotopy types of spaces of symplectic ball embeddings, depending on the capacities of the balls.

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引用

@article{arxiv.2605.24161,
  title  = {Embedding more than 8 symplectic balls in $\mathbb{C}\mathrm{P}^2$},
  author = {Sílvia Anjos and Jarek Kędra and Martin Pinsonnault},
  journal= {arXiv preprint arXiv:2605.24161},
  year   = {2026}
}

备注

23 pages