# Seminars

FC1.031 |
Dynamical Systems

### Lyapunov exponents for transfer operator cocycles of random one-dimensional maps

Non-autonomous or random dynamical systems provide useful and flexible models to investigate…

Speaker: Cecilia Gonzalez Tokman
Online Zoom meeting |
Semigroups, Automata and Languages

### Finite quotients of singular Artin monoids

In this talk I will present a certain hierarchy of diagrammatic monoids which can be unified by…

Speaker: Volodymyr Mazorchuk
FC1 030 |
Algebra, Combinatorics and Number Theory

### Random subgraphs of the hypercube

Hypercubes are arguably one of the most fundamental and most studied objects in Combinatorics.…

Speaker: António Girão
Room 1.20 |
Geometry and Topology

### Compact Hyperkaehler varieties: from smooth to singular

Compact Hyperkaeler manifolds play a central role in complex algebraic geometry, as they arise…

Speaker: Valeria Bertini
FC1 030 |
Algebra and Geometry

### Joint Algebra and Geometry Seminar

Title: 2-Representations of affine type A Soergel bimodules: some observations and examples.  …

Speaker: Marco Mackaaij
FC1.004 |
Dynamical Systems

### Exponential decay of correlations for unbounded observables

We consider nonuniformly hyperbolic dynamical systems with exponential decay of correlations,…

Speaker: Ian Melbourne
FC1.004 |
Dynamical Systems

### Quenched decay of correlations for random expanding Lorenz maps

The expanding Lorenz map, which is obtained by taking a Poi…

Speaker: Andrew Larkin
FC1.030 |
Dynamical Systems

### About the stability of heteroclinic cycles: a new approach

Title: About the stability of heteroclinic cycles: a new approach

Speaker: Alexandre…

Speaker: Alexandre Rodrigues
Room M030, DMat-FCUP |
Computational Mathematics

### Tempered Monoids of Real Numbers, the Golden Fractal Monoid, and the Well-Tempered Harmonic Semigroup

Abstract

Speaker: Maria Bras-Amorós
FC1.030 |
Dynamical Systems

### Symmetries of smooth flows and their time-t maps

We study the discrete centralizers of smooth flows and their time-t maps. Centralizers describe…

Speaker: Wescley Bonomo
Online Zoom meeting |
Semigroups, Automata and Languages

### Eventually fixed points of endomorphisms of virtually free groups

The study of the subgroup fixed by an automorphism of a free group started with the work of…

Speaker: André Carvalho
FC1.031 |
Dynamical Systems

### Product of isometries of strongly hyperbolic spaces

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

Speaker: Luís Sampaio
Online Zoom meeting |
Semigroups, Automata and Languages

### Alternating and symmetric groups with Eulerian generating graph

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

Speaker: Claude Marion
Online seminar |
Algebra, Combinatorics and Number Theory

### Domino tilings in dimension 3

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

### Frailty Variation in Population Dynamics: adventures and disadventures of an elusive concept

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

Speaker: Gabriela Gomes
1.09 |
Geometry and Topology

### Finite group actions on $G$-Higgs bundle moduli spaces and a Prym--Narasimhan--Ramanan type construction

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

### Strange attractors in a seasonally forced epidemic SIR model

We analyse the forced SIR model to investigate the…

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

### Freeness of Schützenberger groups of primitive substitutions

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

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

### Behavior of a typical automorphism

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

Speaker: Dario Darji
FC1.004 |
Dynamical Systems

### Generalized hyperbolicity and the shadowing property

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

Speaker: Dario Darji