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arXiv 1809.10344math.AG
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三角范畴中的稳定性条件和例外对象

Stability Conditions and Exceptional Objects in Triangulated Categories

Zihong Chen

摘要:

研究了射影簇$X$上例外集合$\mathcal{E}$的稳定性条件$Σ_{\mathcal{E}}\subset \mathrm{Stab}(X)$的子空间.按照Emanuele Macrande的方法,我们显示了一定的对应关系之间的同伦类连续循环$Σ_{\mathcal{E}}$和字的辫群。特别地,我们证明了在$X=\mathbb{P}^3$和$\mathcal{E}=\{\mathcal{O},\mathcal{O}(1),\mathcal{O}(2),\mathcal{O}(3)\}$的情况下,空间$Σ_{\mathcal{E}}$是连通和单连通的四维流形。

英文摘要:

The goal of this paper is to study the subspace of stability condition $Σ_{\mathcal{E}}\subset \mathrm{Stab}(X)$ associated to an exceptional collection $\mathcal{E}$ on a projective variety $X$. Following Emanuele Macrì's approach, we show a certain correspondence between the homotopy class of continuous loops in $Σ_{\mathcal{E}}$ and words of the braid group. In particular, we prove that in the case $X=\mathbb{P}^3$ and $\mathcal{E}=\{\mathcal{O},\mathcal{O}(1),\mathcal{O}(2),\mathcal{O}(3)\}$, the space $Σ_{\mathcal{E}}$ is a connected and simply connected 4-dimensional manifold.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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