A note on an effective characterization of covers with an application to higher rank representations

In this note we prove an effective characterization of when two finite-degree covers of a connected, orientable surface of negative Euler characteristic are isomorphic in terms of which curves have simple elevations, weakening the hypotheses to consider curves with explicitly bounded self-intersection number. As an application we show that for sufficiently large N , the set of unmarked traces associated to simple closed curves in a generically chosen representation to \mathrm{SL}_{N}(\mathbb{R}) distinguishes between pairs of non-isomorphic covers.

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Publication Details

Journal
Groups Geometry and Dynamics
Published
2024-11-08
DOI
https://doi.org/10.4171/ggd/836
Primary Topic
Point processes and geometric inequalities
Type
article
Field-Weighted Citation Impact
0.00
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article

A note on an effective characterization of covers with an application to higher rank representations

Max Lahn, Marissa Loving, Tarik Aougab, Nicholas Miller
Groups Geometry and Dynamics
Point processes and geometric inequalities
article

A note on an effective characterization of covers with an application to higher rank representations

Max Lahn, Marissa Loving, Tarik Aougab, Nicholas Miller
article en

Abstract

In this note we prove an effective characterization of when two finite-degree covers of a connected, orientable surface of negative Euler characteristic are isomorphic in terms of which curves have simple elevations, weakening the hypotheses to consider curves with explicitly bounded self-intersection number. As an application we show that for sufficiently large N , the set of unmarked traces associated to simple closed curves in a generically chosen representation to \mathrm{SL}_{N}(\mathbb{R}) distinguishes between pairs of non-isomorphic covers.

Groups Geometry and Dynamics
University of Wisconsin–Madison (US), Haverford College (US), University of Michigan (US), University of Oklahoma (US)
Openalex Percentile: Top 67%
Point processes and geometric inequalities
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A note on an effective characterization of covers with an application to higher rank representations — Max Lahn, Marissa Loving, et al. · Groups Geometry and Dynamics (2024) | TGRS Research Map | TGRS