Patrick Oliveira Santos

collaborators

2 papers

math.CO2023

A combinatorial view on star moments of regular directed graphs and trees

Benjamin Dadoun, Patrick Oliveira Santos

We investigate the method of moments for $d$ -regular digraphs and the limiting $d$ -regular directed tree $T_{d}$ as the number of vertices tends to infinity, in the same spirit as Mc…

math.ST2023

Almost sharp covariance and Wishart-type matrix estimation

Patrick Oliveira Santos

Let $X_{1}, ..., X_{n} \in R^{d}$ be independent Gaussian random vectors with independent entries and variance profile $(b_{ij})_{i \in [d], j \in [n]}$ . A major question in the s…