论极化环流形的周权重吹胀公式

King Leung Lee, Naoto Yotsutani
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引用次数: 0

摘要

设 $X$ 是光滑射影环状流形,并设 $\widetilde{X}$ 是 $X$ 在有限多个不同的游不变点上的吹起流形。在本文中,我们给出了$\widetilde{X}$的周重的明确组合公式,它是以基环状流形$X$和德尔赞特多胞形的交错切点为基础的。然后,我们将这一炸裂公式应用于投影面,观察环状炸裂流形与一般点的炸裂流形之间周稳定性的差异。最后,我们发现了极化环状流形的二木-小野不变量的吹胀公式,它是极化环状流形渐近周半稳 定性的障碍。
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On the blow-up formula of the Chow weights for polarized toric manifolds
Let $X$ be a smooth projective toric variety and let $\widetilde{X}$ be the blow-up manifold of $X$ at finitely many distinct tours invariants points of $X$. In this paper, we give an explicit combinatorial formula of the Chow weight of $\widetilde{X}$ in terms of the base toric manifold $X$ and the symplectic cuts of the Delzant polytope. We then apply this blow-up formula to the projective plane and see the difference of Chow stability between the toric blow-up manifolds and the manifolds of blow-ups at general points. Finally, we detect the blow-up formula of the Futaki-Ono invariant which is an obstruction for asymptotic Chow semistability of a polarized toric manifold.
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