Marcelo Fiori

collaborators

3 papers

math.CO2026

Optimal Small Set Expanders and Their Codes

Tristram Bogart, Marcelo Fiori, Pedro Raigorodsky +1

A left-regular bipartite graph $G$ of degree $d$ is called a $(t, I^\pm)$ -small-set-expander if every subset $X$ of left vertices of size at most $t$ has at least $I^\pm ∣ X ∣$ neighbors. Su…

math.AC2026

Characterization of Logarithmic Fekete Critical Configurations of at Most Six Points in All Dimensions

Diego Armentano, Leandro Bentancur, Federico Carrasco +3

We consider the logarithmic Fekete problem, which consists of placing a fixed number of points on the unit sphere in $R^{d}$ , in such a way that the product of all pairs of…

math.PR2025

On the logarithmic energy of solutions to the polynomial eigenvalue problem

Diego Armentano, Federico Carrasco, Marcelo Fiori

In this paper, we compute the expected logarithmic energy of solutions to the polynomial eigenvalue problem for random matrices. We generalize some known results for the Shub-Smale…