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Equidistribution of roots of unity and the Mahler measure

By Philipp Habegger

Appears in collection : Jean-Morlet Chair 2020 - Conference: Diophantine Problems, Determinism and Randomness / Chaire Jean-Morlet 2020 - Conférence : Problèmes diophantiens, déterminisme et aléatoire

Roots of unity of order dividing $n$ equidistribute around the unit circle as $n$ tends to infinity. With some extraeffort the same can be shown when restricting to roots of unity of exact order $n$. Equidistribution is measured by comparing the average of a continuous test function evaluated at these roots of unity with the integral over the complex unit circle. Baker, Ih, and Rumely extended this to test function with logarithmic singularities of the form $\log|P|$ where $P$ is a univariate polynomial in algebraic coefficients. I will discuss joint work with Vesselin Dimitrov where we allow $P$ to come from a class of a multivariate polynomials, extending a result of Lind, Schmidt, and Verbitskiy. Our method draws from earlier work of Duke.

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Citation data

  • DOI 10.24350/CIRM.V.19687503
  • Cite this video Habegger, Philipp (25/11/2020). Equidistribution of roots of unity and the Mahler measure. CIRM. Audiovisual resource. DOI: 10.24350/CIRM.V.19687503
  • URL https://dx.doi.org/10.24350/CIRM.V.19687503

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