Punctured-disk canonical volume form conjecture

About 16 years old · traced to

Let

Δ∗:={t∈C∣0<∣t∣<1}\Delta^{*}:=\{t\in\mathbb{C}\mid 0<|t|<1\}

be the punctured disk, and let hcan,Δ∗h_{\mathrm{can},\Delta^{*}} be the canonical singular hermitian metric on KΔ∗K_{\Delta^{*}} constructed from pluricanonical forms. Punctured-disk canonical volume form conjecture. The estimate

hcan,Δ∗−1=O(−1 dt∧dtˉ∣t∣2(log⁡∣t∣)2)h_{\mathrm{can},\Delta^{*}}^{-1}=O\left(\frac{\sqrt{-1}\,dt\wedge d\bar t}{|t|^{2}(\log|t|)^{2}}\right)

holds. This concerns the growth of the invariant canonical volume form near the puncture; the author describes it as plausible and states that it is not currently solved.

References

Primary source

Hajime Tsuji, “Canonical singular hermitian metrics on relative logcanonical bundles”, arXiv:1008.1466 (2010).

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