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arXiv · 2506.14478

Quantitative finiteness of hyperplanes in hybrid manifolds

Ko W. Ohm·Anthony Sanchez
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Abstract

We prove a quantitative finiteness theorem for the number of totally geodesic hyperplanes of non-arithmetic hyperbolic $n$-manifolds that arise from a gluing construction of Gromov and Piatetski-Shapiro for $n\ge3$. This extends work of Lindenstrauss-Mohammadi in dimension 3. This follows from effective density theorem for periodic orbits of $\mathrm{SO}(n-1,1)$ acting on quotients of $\mathrm{SO}(n,1)$ by a lattice for $n\ge3$. The effective density result uses a number of a ideas including Margulis functions, a restricted projection theorem, and an effective equidistribution result for measures on the horospherical subgroup that are nearly full dimensional.

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Ko W. Ohm, Anthony Sanchez. 2025-06-17. Quantitative finiteness of hyperplanes in hybrid manifolds. https://arxiv.org/abs/2506.14478

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