Rodrigo Ribeiro, Ph.D.

Professor at IMPA Tech rodrigo.ribeiro@impatech.edu.br

I am a Professor of Mathematics at IMPA Tech. My research focuses on discrete probability, random graphs, random walks, and a bit probabilistic combinatorics.

Education

2012 - 2016

Doctorate - Mathematics

"Agglomeration in Scale-free Random Graphs"

Federal University of Minas Gerais Brazil

Advised by Rémy Sanchis.

Supported by CNPq.

2011 - 2012

Master - Mathematics

"Grafos Aleatórios e Percolação"

Federal University of Minas Gerais Brazil

Advised by Rémy Sanchis.

Supported by CAPES.

2007 - 2010

Bachelor - Mathematics

Federal University of Minas Gerais Brazil

Advised by Israel Vainsencher. Co-advised by Renato Vidal

Supported by FAPEMIG.

Professional Experience

2022 - Current

Visiting Assistant Professor

University of Denver

2020 - 2022

Visiting Assistant Professor

University of Colorado Boulder

2018 - 2020

Postdoctoral Researcher Fellow

Universidad Catolica de Chile

Supervised by Alejandro Ramírez. Supported by Iniciativa Milenio.

2016 - 2018

Postdoctoral Researcher Fellow

Instituto Nacional de Matemática Pura e Aplicada

Supervised by Roberto Imbuzeiro Oliveira. Supported by CNPq.

Publications & Preprints

preprint Rodrigo Ribeiro. "A Martingale Approach to Large-$θ$ Ewens-Pitman Model." 2025.
published Janos Engländer, Giulio Iacobelli, Gábor Pete, Rodrigo Ribeiro. "Structural results for the tree builder random walk." The Annals of Applied Probability. 35 (2) 2025.
accepted Pamela E. Harris, Rodrigo Ribeiro, Mei Yin. "Probabilistic $(m,n)$-Parking Functions." Electronic Journal of Combinatorics. 2025.
published Rodrigo Ribeiro. "Renewal structure of the tree builder random walk." Stochastic Processes and their Applications. 190 104725, 2025.
published Caio Alves, Rodrigo Ribeiro, Rémy Sanchis. "Clustering and Cliques in Preferential Attachment Random Graphs with Edge Insertion." Journal of Statistical Physics. 191 (6) 2024.
published Denise Duarte, Wesley H.S. Pereira, Rodrigo B. Ribeiro. "A probabilistic model for networks generated by actors’ characteristics." Journal of Computational Science. 73 102143, 2023.
published Caio Alves, Rodrigo Ribeiro, Daniel Valesin. "Asymptotic results of a multiple-entry reinforcement process." Stochastic Processes and their Applications. 161 451-489, 2023.
published Irfan Durmić, Alex Han, Pamela E. Harris, Rodrigo Ribeiro, Mei Yin. "Probabilistic Parking Functions." The Electronic Journal of Combinatorics. 30 (3) 2023.
published Giulio Iacobelli, Rodrigo Ribeiro, Glauco Valle, Leonel Zuaznábar. "Tree builder random walk: Recurrence, transience and ballisticity." Bernoulli. 28 (1) 2022.
published Alejandro F. Ramírez, Rodrigo Ribeiro. "Computable criteria for ballisticity of random walks in elliptic random environment." Electronic Journal of Probability. 27 2022.
published Caio Alves, Rodrigo Ribeiro. "Spread of Infection over P.A. random graphs with edge insertion." Latin American Journal of Probability and Mathematical Statistics. 19 (2) 1221, 2022.
published Denise Duarte, Gilvan R Guedes, Wesley H S Pereira, Rodrigo B Ribeiro. "Representing collective thinking through cognitive networks." Journal of Complex Networks. 10 (6) 2022.
published Daniel Figueiredo, Giulio Iacobelli, Roberto Oliveira, Bruce Reed, Rodrigo Ribeiro. "On a random walk that grows its own tree." Electronic Journal of Probability. 26 (none) 2021.
accepted János Engländer, Giulio Iacobelli, Rodrigo Ribeiro. "Recurrence, transience and degree distribution for the Tree Builder Random Walk." Annales de l'Institut Henri Poincaré. 2021.
published Caio Alves, Rodrigo Ribeiro, Rémy Sanchis. "Clustering in preferential attachment random graphs with edge-step." Journal of Applied Probability. 58 (4) 890-908, 2021.
published R. I. Oliveira, A. Pereira, R. Ribeiro. "Concentration in the Generalized Chinese Restaurant Process." Sankhya A. 84 (2) 628-670, 2020.
published Caio Alves, Rodrigo Ribeiro, Rémy Sanchis. "Diameter of P.A. random graphs with edge‐step functions." Random Structures & Algorithms. 57 (3) 612-636, 2020.
published Caio Alves, Rodrigo Ribeiro, Rémy Sanchis. "Preferential Attachment Random Graphs with Edge-Step Functions." Journal of Theoretical Probability. 34 (1) 438-476, 2019.
published R. I. Oliveira, R. Ribeiro, R. Sanchis. "Disparity of clustering coefficients in the Holme‒Kim network model." Advances in Applied Probability. 50 (3) 918-943, 2018.
published Caio Alves, Rodrigo Ribeiro, Rémy Sanchis. "Large Communities in a Scale-Free Network." Journal of Statistical Physics. 166 (1) 137-149, 2016.

Supervisees

Graduate

Wesley da Silva

UFMG 2018 - 2019

I worked together Professor Denise Duarte as a master co-advisor of Wesley Silva. His dissertation resulted in two papers involving modeling cognitive thinking via networks.

Selected Talks

2025

Renewal Structure for the TBRW

Stochastic Reinforcement Processes BIRS - Canada

September 2, 2025

2023

The Tree Builder Random Walk

Probability Seminar University of Utah

April 12, 2023

On Random Walks that change their own environment

Seminars of the Math Departament NYU Shangai

April 1, 2023

Preferential Attachment Random Graphs with Edge Steps

Combinatorics Seminar University of Illinois

February 20, 2023

2022

On Random Walks that change their own environment

Analysis Seminars University of Denver

September 1, 2022

2019

The Tree Builder Random Walk

Latin American Congress of Probability and Mathematical Statistics Mexico

December 2, 2019

2018

Topological Properties of Random Graphs

Statistics and Probability Seminar Universidad Catolica de Chile

December 1, 2018

Building your path to escape from home

Graphs and Randomness IMPA

September 1, 2018

Building your path to escape from home

Statistics and Probability Seminar University of Groningen, Netherlands

March 1, 2018

2017

Preferential Attachment Random Graphs with Edge-Step Functions

ProbComb Seminar IMPA

September 1, 2017

2016

Métricas em redes complexas: análise de estruturas

Departamento de Estatística UFMG

February 2, 2016

Análise de redes complexas: matemática no Facebook [In Portuguese]

III Simpósio Nacional do PICME UFMG

February 1, 2016

2015

Communities and Clustering in a Scale-Free System

Dias Probabilísticos no Fundão UFRJ, Rio de Janeiro

February 2, 2015

Selected Events

2025

Stochastic Reinforcement Processes

Speaker Banff International Research Station, Canada

August 31, 2025

2023

Asymptotic Limits of Discrete Random Structures Workshop

Participant/Poster Brown University

September 1, 2023

Poster “A Random Walk that builds its own Tree”.

2015

XIX Brazilian Probability School

Participant/Poster Rio de Janeiro

August 1, 2015

Presented the post: “Cliques in Random Graphs”

2014

37th Conference on Stochastic Processes and Their Applications

Participant/Poster UBA, Buenos Aires

August 1, 2014

Presented the poster: “The Power of Choice”