# Seminars

Online Zoom meeting |
Semigroups, Automata and Languages

### A Combinatorial Description for DAb

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

Speaker: Jan Philipp Wächter
FC1.031 |
Dynamical Systems

### Holder continuity for Lyapunov exponents of random linear cocycles

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

Speaker: Marcelo Durães
FC1.031 |
Dynamical Systems

### Uniform convergence rate for Birkhoff means of certain uniquely ergodic toral maps

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

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

Speaker: Alfredo Costa
FC1.031 |
Dynamical Systems

### On Ergodic Theory of Impulsive Semiflows

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

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

### On The Zeros of a Class of Dirichlet series

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

Speaker: Pedro Ribeiro
1.09 |

### On rationally integrable projective billiards

1.09 |
Geometry and Topology

### On rationally integrable projective billiards

Abstract:

Speaker: Alexey Glutsyuk
Online Zoom meeting |
Semigroups, Automata and Languages

### Dimension groups of dynamical systems, substitutions, Bratteli diagrams and Cantor systems

In this talk, I intend to give a view of the contents of the book with the same title, which…

Speaker: Dominique Perrin
Room 0.27 (FC1 Building) |
Research Seminar Program (UC|UP MATH PhD program)

### Research Seminar Program - UC|UP Phd Program in Mathematics

PROGRAM

Online seminar |
Algebra, Combinatorics and Number Theory

### Brauer-Manin obstruction and zero-cycles on some varieties

We give an introduction on the Brauer-Manin obstruction to the Hasse principle and present some…

Speaker: Evis Ieronymou
Online Zoom meeting |
Semigroups, Automata and Languages

### About random subgroups of free groups

One may wonder what are the 'most frequent' properties of finitely generated of subgroups of…

Speaker: Pascal Weil
Online seminar |
Algebra, Combinatorics and Number Theory

### Playing puzzles on complicated surfaces

This talk will be about a project aiming to illustrate geometry through puzzles. The puzzles are…

Speaker: Hugo Parlier
Online Zoom meeting |
Semigroups, Automata and Languages

### From $A$ to $B$

The five-element semigroups $A_2$ and $B_2$

Speaker: Marcel Jackson
Online seminar |
Algebra, Combinatorics and Number Theory

### Eigenvalue multiplicities of group elements in irreducible representations of simple linear algebraic groups

Let $k$ be an algebraicallly closed field of characteristic $p\geq 0$ and let $G$ be a linear…

Speaker: Ana Retegan
1.09 |
Geometry and Topology

### A modified Hitchin base using quadratic multi-scale differentials

The complexity of the singular fibers of the Hitchin system stems from the diversity of…

Speaker: Johannes Horn
Online Zoom meeting |
Semigroups, Automata and Languages

### Regular semigroups weakly generated by idempotents

We say that a regular semigroup $S$ is weakly generated by a set $X$ if it has no proper regular…

Speaker: Luís Oliveira
FC1.004 |
CMUP Informal PHD Seminar

### What is descent theory?

Descent theory is the study of local-to-global problems. After a quick review of simple…