De 2 de outubro até 16 de novembro de 2023 estarão abertas as inscrições para o processo seletivo para o Mestrado e o Doutorado em Estatística no nosso programa, Turma 2024-1. São oferecidas 20 vagas para o Mestrado e 10 vagas para o Doutorado.

O edital pode ser acessado AQUI.

O programa recebe bolsas das agências  CNPq, CAPES e FAPERJ. Nos últimos anos, quase todos os alunos matriculados em dedicação exclusiva receberam bolsa de estudos. Estamos com boa disponibilidade de bolsas de doutorado.

O programa desenvolve pesquisa em Estatística e Probabilidade. Para informações sobre as linhas de pesquisa AQUI.

Title: Stochastic Adding Machines
Speaker: Ali Messaoudi (Unesp, São José do Rio Preto)
Date: 25/09/2023
Horário: 3:30 p.m. to 4:30 p.m.
Local: C116 - Bloco C - CT – Instituto de Matemática – UFRJ. There will be no transmission online.

Abstract: A stochastic adding machine (defined in [PR Killeen and T. J. S. Taylor, Nonlinearity 13 (2000), no. 6, 1889–1903]) is a Markov chain whose states are natural integers, which models the process of adding the number $1$ but where there is a probability of failure in which a carry is not performed when necessary.
In this lecture, we will talk about probabilistic properties of extensions for the stochastic adding machine and their connections with other areas of mathematics such as Complex Dynamics and Linear Dynamics.
This is a joint work with Danilo Caprio and Glauco Valle.

More complete information about the seminars can be found clicking HERE..

Sincerely,
Organizers: Giulio Iacobelli e Maria Eulalia Vares

Title: One dimensional contact process with modified border conditions.
Speaker: Enrique D. Andjel.
Date: 02/10/2023
Horário: 3:30 p.m. to 4:30 p.m (Rio de Janeiro local time).
Local: C116 - Bloco C - CT – Instituto de Matemática – UFRJ. There will be no transmission online.

Abstract: In this joint work with Leonardo Rolla we study a one-dimensional contact process with two infection parameters. One of these parameters gives the infection rates at the boundaries of a finite infected region and the other one gives the rates within that region. We prove that the critical value of each of these parameters is a strictly monotone continuous function of the other parameter. We also show that if one of these parameters is equal to the critical value of the standard contact process and the other parameter is strictly larger, then the infection starting from a single point has a positive probability of surviving.

More complete information about the seminars can be found at HERE

Sincerely,
Organizers: Giulio Iacobelli e Maria Eulalia Vares.

Título: Central Limit Theorem for the limit process of the discrete time RAP seen from the origin
Palestrante: Mariela Pentón Machado (IME-USP)
Data: 18/09/2023
Horário: 3:30 p.m. to 4:30 p.m.
Sala: C116 - Bloco C - CT – Instituto de Matemática – UFRJ. There will be no transmission online.

Resumo: Pablo Ferrari and Luiz Renato Fontes introduced The Random Average Process (RAP) in 98. We are interested in the discrete-time version of the RAP. This process is a random surface whose heights evolve taking a convex combination of the previous heights. In this dynamic, a random matrix of probabilities with independent and identically distributed rows determines the weights of the convex combinations. The process seen from the height in the origin is the random surface result of subtracting the height in the origin to all the heights in the initial surface. Under certain conditions, Ferrari and Fontes proved in 98 the existence of a limit process for the process seen from the height of the origin. In this talk I will discuss a Central Limit Theorem in the spacial variable for the limit process seen from  the height in the origin.  This is a joint work with Luiz Renato Fontes and Leonel Zuaznabar.

More complete information about the seminars can be found clicking HERE.

Sincerely,
Organizers: Giulio Iacobelli e Maria Eulalia Vares