ScalingStacks

Lemma B.6 (Local vanishing) . [01I5]

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Lemma B.6 (Local vanishing).

Let 𝒳\mathcal{X} be a regular model, let π”ž\mathfrak{a} be a vertical ideal sheaf on 𝒳\mathcal{X} and let Ο€:𝒳′→𝒳\pi:\mathcal{X}^{\prime}\to\mathcal{X} be an SNC model such that π”žβ‹…π’ͺ𝒳′=π’ͺ𝒳′​(βˆ’D)\mathfrak{a}\cdot\mathcal{O}_{\mathcal{X}^{\prime}}=\mathcal{O}_{\mathcal{X}^{\prime}}(-D) with D∈Div0⁑(𝒳′)D\in\Div_{0}(\mathcal{X}^{\prime}). Then we have

Rqβ€‹Ο€βˆ—β€‹Ο‰π’³β€²β€‹(βˆ’βŒŠc​DβŒ‹)=0​ for all ​qβ‰₯1.R^{q}\pi_{*}\omega_{\mathcal{X}^{\prime}}\left(-\lfloor c\,D\rfloor\right)=0\,\,\text{ for all }q\geq 1.

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