THE DIRICHLET PROBLEM ON INFINITE TREES - MATTEO LEVI - POSTDOCTORAL FELLOW AT POLITECNICO DI TORINO

Abstract
Trees in analysis are both a fruitful model for continuous problems and an interesting metric space per se.
In this talk, Dr. Levi will consider the Dirichlet problem on a locally finite tree of infinite depth, with no combinatorial
restrictions, and he will prove that the set of irregular points for continuous boundary data has zero capacity.
He will also give some uniqueness results for solutions in Sobolev W1;p of the tree.
The talk is based on a joint work with Nikolaos Chalmoukis.

Biography
Matteo Levi is a PostDoctoral Fellow at DISMA since March 2020, working with prof. Maria Vallarino. Graduated
at Università degli Studi di Milano, he obtained his PhD title in December 2019, from Università di Bologna and
Universitat Autónoma de Barcelona. Funded by the European grant H2020-MSCA-RISE-2017, in October and
November 2019 he was visiting Johns Hopkins University (Baltimore), where he later got an Assistant Research
Scholar position for the next months until the end of February 2020. His research interests lie, on the one hand,
in Complex and Harmonic Analysis, with special focus on discrete settings for the latter, while on the other in the
use of both Harmonic Analysis and Optimal Transport techniques for applications in Data Analysis and Machine
Learning.

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