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Abundance theorem for threefolds in mixed characteristic

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Abstract

We prove the abundance theorem for arithmetic klt threefold pairs whose closed point have residue characteristic greater than 5. As a consequence, we give a sufficient condition for the asymptotic invariance of plurigenera for certain families of singular surface pairs to hold in mixed characteristic.

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Acknowledgements

The authors thank F. Bongiorno, P. Cascini, J.A. Chen, E. Floris, S. Filipazzi and C.D. Hacon for useful discussions on the content of this article. We are grateful to the referee for comments and suggestions, which considerably improved the presentation of the article. FB was partially supported by the NSF under grant number DMS-1801851, by a grant from the Simons Foundation; Award Number: 256202 and by the grant \(\#\)200021/169639 from the Swiss National Science Foundation; IB was supported by the National Center for Theoretical Sciences and a grant from the Ministry of Science and Technology, grant number MOST-110-2123-M-002-005; LS is grateful to the EPSRC for his funding.

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Correspondence to Iacopo Brivio.

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Bernasconi, F., Brivio, I. & Stigant, L. Abundance theorem for threefolds in mixed characteristic. Math. Ann. 388, 141–166 (2024). https://doi.org/10.1007/s00208-022-02514-5

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