The Gruenberg-Kegel graph of a group is defined as the graph whose vertices are the primes that…
Seminars
Future and Ongoing Seminars
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
Speaker: Diego Lucas Garcia
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
Chen, Erdős, and Staton asked in 1996 how many edges are required in an n-vertex graph to…
Speaker: António Girão
FC1 031 and online |
Algebra, Combinatorics and Number Theory
This has been an open question for more than 70 years. I'll review what is known, including some…
Speaker: Ken Brown
FC1 031 and online |
Algebra, Combinatorics and Number Theory
Quasi-hereditary algebras are a class of finite-dimensional associative algebras that appear…
Speaker: Tiago Cruz
FC1 1.09 |
Geometry and Topology
Abstract: I will review the application of Hamiltonian flows in imaginary time…
Speaker: João Luís Pimentel Nunes
FC1 031 and online |
Algebra, Combinatorics and Number Theory
Quasigroupoids and weak Hopf quasigroups are non-associative generalizations of groupoids and…
Speaker: Ramón González Rodríguez
FC1 031 and online |
Algebra, Combinatorics and Number Theory
Polynomial expansion concerns the heuristic expectation that, for a typical polynomial P in n…
Speaker: Nuno Arala Santos
Past Seminars
FCUP, Mathematics Building |
Algebra, Combinatorics and Number Theory
In a previous paper, joint with François Dumas, we had studied a family of skew fields called "Mixe
Speaker: Jacques Alev (Université de Reims)
Room FC1.030, DMat-FCUP |
Semigroups, Automata and Languages
A famous theorem of Takahashi states the following:
Theorem. Let $F$ be a free group and let $K_1
Speaker: Pedro V. Silva (FCUP / CMUP)
Room M031 |
Dynamical Systems
See attached file.
Speaker: Paulo Varandas (Universidade Federal da Bahia, Brasil)
Geometry and Topology
This talk is based on joint work with Weiwei Pan, Daniel Tubbenhauer and with Yasuyoshi Yonezawa. In
Speaker: Marco Mackaaij (Univ. Algarve)
FCUP, Mathematics Building FC1 0.29 |
General seminar of CMUP
I will give a survey of some old and some new results about Hopf algebras, starting by discussing so
Speaker: Ken Brown (Glasgow University)
Room FC1.006, DMat-FCUP |
Semigroups, Automata and Languages
After the introduction of the (first) Grigorchuk group, that was the first example of a group with i
Speaker: Daniele D’Angeli (Graz University of Technology, Austria)
Room FC1.006, DMat-FCUP |
Semigroups, Automata and Languages
Auinger, Chen, Hu, Luo, and the speaker have recently found a new sufficient condition under which a
Speaker: Mikhail Volkov (Ural Federal University, Ekaterinburg, Russia)
FC1-0.29 |
General seminar of CMUP
Mathematical handwriting provides a number of challenges beyond what is required for the recognition
Speaker: Stephen Watt, University of Western Ontario, Canada
room 006 (FC1 -- Maths Bldg) |
Algebra, Combinatorics and Number Theory
The main goal of this talk is to present the generalization of classical results that characteriz
Speaker: Natalia Pacheco Rego (IPCA, Departamento de Ciências, Barcelos)
Room M031 |
Dynamical Systems
An impulsive semiflow is prescribed by three ingredients: a continuous semiflow on a compact metric
Speaker: Maria Carvalho (FCUP, CMUP)
Room M031 |
Dynamical Systems
In the theory of coupled cell networks, formalized by Ian Stewart, Martin Golu- bitsky and coworkers
Speaker: Célia Sofia Moreira (FCUP-CMUP)
FC1 030 (DMAT) |
Statistics Modeling and Computational Applications
The screening procedure consists in building a specification region CX in the d-dimensional space su
Speaker: Sandra Ramos
Geometry and Topology
We use Higgs bundles to study the character variety for representations of a surface group in the no
Speaker: Peter Gothen (Porto)
Room FC1.030, DMat-FCUP |
Semigroups, Automata and Languages
This talk deals with the problem whether a function $f \colon A^n \to B$ is uniquely determined, up
Speaker: Erkko Lehtonen (CAUL)
FC1, Room 0.06 |
Geometry and Topology
The topological complexity of a space has been introduced by M. Farber in order to give a measure of
Speaker: Lucile Vandembroucq (Minho)
Room FC1 030, DM - FCUP |
Numerical Analysis
We address the numerical challenge of solving Sturm--Liouville problems in Liouville's normal
Speaker: Alberto Gil C. P. Ramos
Room M031 |
Dynamical Systems
A bifurcation theory for random dynamical systems (ie dynamical systems with noise) is still o
Speaker: Jeroen Lamb (Imperial College of London, UK)
Room M031 |
Dynamical Systems
It is well known that the Extremal Index (EI) measures the intensity of clustering of extreme
Speaker: Jorge M. Milhazes Freitas (FCUP, CMUP)
Room 0.31 |
Dynamical Systems
See attached file
Speaker: Santiago Ibanez Mesa (Universidade de Oviedo, Spain)
Room M031 |
Dynamical Systems
Simple heteroclinic networks are those made of simple cycles: cycles such that the connections betwe
Speaker: Sofia Castro (FEP, Porto)