arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2302.13503math.AG
收藏

关于K-半稳定域的形态与K-稳定性的壁穿越

On the shape of the K-semistable domain and wall crossing for K-stability

School of Mathematical Sciences, Xiamen University(厦门大学数学科学学院)

Chuyu Zhou

AI总结:

本文证明了对数对(X, ∑D_j)的K-半稳定域是位于k维单纯形中的有理多面体,并建立了具有多重边界的K-模空间的壁穿越理论。

摘要:

固定两个正整数$d$和$k$,一个正数$v$,以及一个正整数$I$,我们证明了对数对$(X, \sum_{j=1}^kD_j)$的K-半稳定域是一个位于$k$维单纯形$\overline{\Delta^k}$中的有理多面体,其中$X$是$d$维Fano簇,$D_j\sim_\mathbb{Q} -K_X$,$(-K_X)^d=v$,$I(K_X+D_j)\sim 0$,且对于某些$c_j\in [0,1)\cap \mathbb{Q}$,$(X, \sum_{j=1}^kc_jD_j)$是K-半稳定对数Fano对。此外,我们证明了对于这样的对数对,可能作为K-半稳定域出现的多面体只有有限多个。基于此,我们建立了具有多重边界的K-模空间的壁穿越理论。

英文摘要:

Fixing two positive integers $d$ and $k$, a positive number $v$, and a positive integer $I$, we prove that the K-semistable domain of the log pair $(X, \sum_{j=1}^kD_j)$ is a rational polytope lying in the $k$-dimensional simplex $\overline{Δ^k}$, where $X$ is a Fano variety of dimension $d$, $D_j\sim_\mathbb{Q} -K_X$, $(-K_X)^d=v$, $I(K_X+D_j)\sim 0$, and $(X, \sum_{j=1}^kc_jD_j)$ is a K-semistable log Fano pair for some $c_j\in [0,1)\cap \mathbb{Q}$. Moreover, we show that there are only finitely many polytopes which may appear as the K-semistable domains for such log pairs. Based on this, we establish a wall crossing theory for K-moduli with multiple boundaries.

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。

↑