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Seminars

Past Seminars

Online Zoom meeting |
Semigroups, Automata and Languages

We introduce the notion of a crossed module over an inverse semigroup which generalizes…

Speaker: Mykola Khrypchenko
FC1 007 (and online) |
Algebra, Combinatorics and Number Theory

I will present some results that were obtained in collaboration with Csaba Schneider (…

Speaker: Raimundo de Araújo Bastos Júnior
Online Zoom meeting |
Geometry and Topology

In this talk, I will discuss recent joint work with Alexeev-Engel-Schaffler that provides…

Speaker: Daniel Zachary Garza
FC1 007 |
Algebra, Combinatorics and Number Theory

Let $A$ be an associative algebra over a field $F$ of characteristic zero, $F\langle X \rangle$…

Speaker: Carla Rizzo
FC1 007 |
Algebra, Combinatorics and Number Theory

Given a group $G$ and a partial factor set $\sigma $ of $G,$ we introduce the twisted partial…

Speaker: Mikhailo Dokuchaev
Online Zoom meeting |
Geometry and Topology

I will explain how to express the space of almost complex structures J(M) on a…

Speaker: Gustavo Granja
FC1 0.31 and online |
Analysis

The recurrence coefficients of a generalised symmetric F…

Speaker: Ana Filipa Loureiro
FC1 007 |
Algebra, Combinatorics and Number Theory

The Monster group $M$ is the largest sporadic simple group. It is also the group of…

Speaker: Albert Gevorgyan
FC1.031 |
Dynamical Systems

This presentation is divided into three parts where we analyze three different…

Speaker: João Carvalho
FC1 004, (Math Bldg., FCUP) |
Semigroups, Automata and Languages

Finite automata are classical machines that recognise regular languages. However, many other…

Speaker: Luca Prigioniero
Online |
Geometry and Topology

A twisted rational map over an algebraically closed and complete non-

Speaker: Shengyuan Zhao
FC1.031 |
Dynamical Systems

Apresentaremos o estado da arte sobre o estudo da conjectura da estabilidade para fluxos…

Speaker: Rafael Ruggiero
FC1.031 |
Dynamical Systems

The study of hyperbolic structures (uniform and nonuniform ones)
is a central subject in…

Speaker: Luciana Silva Salgado
Online Zoom meeting |
Geometry and Topology

We consider germs of holomorphic vector fields at the origin in dimension 3…

Speaker: Fernando Peirera Paulucio Reis
Online Zoom meeting |
Semigroups, Automata and Languages

Motivated by the recent surge of interest in the concept of injective C*…

Speaker: Ruy Exel
Online Zoom meeting |
Semigroups, Automata and Languages

This presentation will focus on extending the theory of formations of groups to inverse…

Speaker: Isabel J. Nobre
Online seminar |
Algebra, Combinatorics and Number Theory

A Kirkman Triple System (KTS) is called $m$-pyramidal if there exists a subgroup $G$ of its…

Speaker: Martino Garonzi
Seminário online |
Algebra, Combinatorics and Number Theory

Seguindo a ideia no artigo de Hu e Vercruysse [1], introduzimos morfismos parciais em uma…

Speaker: Francisco Gabriel Klock Campos Vidal
Seminário online |
Geometry and Topology

We consider germs of holomorphic vector fields at the origin in…

Speaker: Fernando Peirera Paulucio Reis
FC1 003 (and online) |
Algebra, Combinatorics and Number Theory

Let us consider the action of the general linear group $\mathrm{GL}_n(\mathbb{C})$ on the direct…

Speaker: Xabier García Martínez