Grauert–Riemenschneider vanishing conjecture over simple normal crossing pairs

Let YY be a normal excellent scheme, DD a Weil Z{\mathbb Z}-divisor on YY, and ΔD\Delta_D a Weil R{\mathbb R}-divisor whose coefficients are in [0,1][0,1]. Assume that D+ΔDD+\Delta_D is R{\mathbb R}-Cartier. Let π ⁣:XY\pi\colon X\to Y be a proper, birational log resolution of (Y,D+ΔD)(Y,D+\Delta_D), and let πKF(D)\pi^{\rm KF}(D) denote the K-twisted Fujita transform. Suppose in addition that (Y,D+ΔD)(Y,D+\Delta_D) is a simple normal crossing pair.

Grauert–Riemenschneider vanishing conjecture. For every i>0i>0,

RiπOX(πKF(D))=0.R^i\pi_*{\mathcal O}_X\bigl(\pi^{\rm KF}(D)\bigr)=0.

The paper proves this conjecture under the stated resolution assumption, and consequently obtains it for excellent Q\mathbb{Q}-schemes and excellent schemes of dimension at most 33.

Sources & referencesView supporting material

Primary source

Fabio Bernasconi and János Kollár, “Vanishing theorems for threefolds in characteristic p>5”, arXiv:2012.08343 (2021).

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