Good functions, measures, and the Kleinbock-Tomanov conjecture

Victor Beresnevich; Shreyasi Datta; Anish Ghosh

doi:10.1515/crelle-2024-0052

Good functions, measures, and the Kleinbock-Tomanov conjecture

Victor Beresnevich, Shreyasi Datta^*, Anish Ghosh

^*Corresponding author for this work

Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper we prove a conjecture of Kleinbock and Tomanov on Diophantine properties of a large class of fractal measures on Qnp. More generally, we establish the p-adic analogues of the influential results of Kleinbock, Lindenstrauss, and Weiss on Diophantine properties of friendly measures. We further prove the p-adic analogue of Kleinbock's theorem concerning Diophantine inheritance of affine subspaces. One of the key ingredients in the proofs of Kleinbock, Lindenstrauss, and Weiss is a result on (C,α)-good functions whose proof crucially uses the mean value theorem. Our main technical innovation is an alternative approach to establishing that certain functions are (C,α)-good in the p-adic setting. We believe this result will be of independent interest.

Original language	English
Number of pages	33
Journal	Journal für die reine und angewandte Mathematik
Early online date	1 Aug 2024
DOIs	https://doi.org/10.1515/crelle-2024-0052
Publication status	E-pub ahead of print - 1 Aug 2024

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10.1515/crelle-2024-0052

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Cite this

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AU - Ghosh, Anish

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