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Seminars

Online Zoom meeting |
Semigroups, Automata and Languages

Given a finite group $G$, the generating graph $\Gamma(G)$ of $G$ has as vertices the (…

Speaker: Claude Marion
FC1.031 |
Dynamical Systems

The study of random products of operators appears naturally in many
areas of mathematics…

Speaker: Luís Sampaio
Online seminar |
Algebra, Combinatorics and Number Theory

In dimension 2, a domino is a $2\times 1$ rectangle. Domino tilings of quadriculated regions…

Speaker: Nicolau Saldanha
FC1-029 |
General seminar of CMUP

Abstract: Selection acting on unmeasured individual variation is a common source of bias in the…

Speaker: Gabriela Gomes
1.09 |
Geometry and Topology

In 1975 Narasimhan and Ramanan studied the action of a line bundle $L$ of finite order on the…

Speaker: Guillermo Barajas Ayuso
FC1.031 |
Dynamical Systems

We analyse the forced SIR model to investigate the…

Speaker: João Carvalho
Online Zoom meeting |
Semigroups, Automata and Languages

Following a correspondence due to Almeida, every uniformly recurrent language determines a…

Speaker: Herman Goulet-Ouellet
FC1-029 |
General seminar of CMUP

Abstract: We will discuss three simple automorphism groups: the group of bijections on the set…

Speaker: Dario Darji
FC1.004 |
Dynamical Systems

 In this talk we discuss hyperbolicity, expansivity, the shadowing property and structural…

Speaker: Dario Darji
online |
Geometry and Topology

Abstract. In this talk we will focus on semicomplete Halphen vector fields.

Speaker: Ahmed Elshafei
Online Zoom meeting |
Semigroups, Automata and Languages

In 1985, Bucher, Ehrenfeucht and Haussler studied derivation relations associated with a given…

Speaker: Ondřej Klíma
Online Zoom meeting |
Semigroups, Automata and Languages

Let $I_n$ be the symmetric inverse semigroup on $…

Speaker: Georg Klein
Online Zoom meeting |
Semigroups, Automata and Languages

Finite rank plactic monoids are infinite monoids arising from a natural combinatorial…

Speaker: Marianne Johnson
Online Zoom meeting |
Semigroups, Automata and Languages

The class of regular languages is the smallest class of languages containing the finite…

Speaker: Jean-Eric Pin
Online Zoom meeting |
Semigroups, Automata and Languages

The variety (of finite semigroups) DAb is the class of finite semigroups whose regular 𝒟-classes…

Speaker: Jan Philipp Wächter
FC1.031 |
Dynamical Systems

In 2017, Baraviera and Duarte extended a classical theorem from Le Page.

Speaker: Marcelo Durães
FC1.031 |
Dynamical Systems

In this talk, we will present an estimate on the uniform convergence rate of the Birkhoff…

Speaker: Aline Melo
Online Zoom meeting |
Semigroups, Automata and Languages

The Finite Index Basis Theorem is an elegant result connecting bifix codes, symbolic dynamical…

Speaker: Alfredo Costa
FC1.031 |
Dynamical Systems

Impulsive Dynamical Systems (IDS) can be seen as suitable mathematical models of real…

Speaker: Jaqueline Siqueira
FC1.004 |
CMUP Informal PHD Seminar

Let $Q(x,y)=ax^{2}+bxy+cy^{2}$ be a real and positive definite quadratic form. The classical…

Speaker: Pedro Ribeiro