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
Room FC1.006, DMat-FCUP |
Semigroups, Automata and Languages
In this talk, I will collect some results about random walks on regular languages over a finite alph
Speaker: Lorenz Gilch (University of Graz, Austria)
FC1 0.06 |
Geometry and Topology
We propose an extension of Heegaard Floer homology to contact manifolds of higher dimensions based
Speaker: Vincent Colin (Nantes)
Room M031 |
Dynamical Systems
Solutions of functional equations may have exotic properties: they may be singular, fractal or ev
Speaker: Cristina Serpa (CMAF, Lisboa)
Room FC1.029, DMat-FCUP |
Semigroups, Automata and Languages
The word problem for omega terms over a variety (of finite monoids) V is the following decision prob
Speaker: Jan Philipp Wachter (University of Stuttgart, Germany)
Room 0.07, FC1 |
Geometry and Topology
A celebrated theorem due to Gromov and Eliashberg states that the C^0-limit of a sequence of sym
Speaker: Rémi Leclercq
Room FC1.006, DMat-FCUP |
Semigroups, Automata and Languages
The Karoubi envelope plays a fundamental role in Tilson's Delay theorem. It is also known that two s
Speaker: Alfredo Costa (FCTUC/CMUC)
Room 0.06, FC1 |
Geometry and Topology
The work of Hausel proves that the Bialynicki-Birula stratification of the moduli space of rank two
Speaker: Ronald Zúñiga-Rojas (CMUP, CIMM-Universidad de Costa Rica)
Room M031 |
Dynamical Systems
Apresentamos alguns resultados sobre a existência de órbitas periódicas no
problema restringido d
Speaker: Alessandro Margheri(*) (University of Lisbon and CMAF)
M006 |
Geometry and Topology
In this talk I will use a long exact sequence (after recalling its construction) relating the Legend
Speaker: Baptiste Chantraine (Nantes)
Room FC1.029, DMat-FCUP |
Semigroups, Automata and Languages
In this work, we define a congruence $\eta^{\ast}$ on semigroups. For the finite semigroups $S$, $
Speaker: M. Hossein Shahzamanian (CMUP)
Room M031 |
Dynamical Systems
Fernandez and Demers studied the statistical properties of the Manneville-Pomeau
map with the physic
Speaker: Mike Todd(*) (University of St Andrews, Scotland)
Room M031 |
Dynamical Systems
Apresentaremos o conceito de estabilidade estatística e ofereceremos uma visita
guiada por alguns
Speaker: José Ferreira Alves (FCUP and CMUP)
Room FC1.004, DMat-FCUP |
Semigroups, Automata and Languages
We present a geometric approach to groups defined by transducers via the notion of enriched dual. We
Speaker: Emanuele Rodaro (CMUP)
M006 |
Geometry and Topology
Hyperbolic groups were introduced by Mikhail Gromov in the 80s by considering the geometry of Cayley
Speaker: Pedro V. Silva (CMUP)
Room M031 |
Dynamical Systems
In this talk, after a brief survey on linear response formula results, we will focus
in some develop
Speaker: Armando Castro Jr. (Universidade Federal da Bahia - UFBA, Brasil)
Room FC1.004, DMat-FCUP |
Semigroups, Automata and Languages
In the first part of this talk we investigate the minimum length of elements in the minimum ideal
Speaker: Nasim Karimi (FCUP / CMUP)
Room M031 |
Dynamical Systems
Daremos condições explícitas (que definem um conjunto C1-aberto de difeomor- fismos) que garantem
Speaker: Lorenzo Dias (PUC-Rio, Rio de Janeiro, Brasil)
Room 0.04, FC1 |
Geometry and Topology
In a previous paper, I proved that two very different constructions of monotone Lagrangian tori are
Speaker: Agnès Gadbled (CMUP)
Room M031 |
Dynamical Systems
Large deviation type estimates of a linear cocycle can be used to prove the continuity of its Lyapun
Speaker: Pedro Duarte (CEMAPRE – ISEG, Universidade Técnica de Lisboa)
Room 0.04 (FC1) |
Geometry and Topology
Consider a complete intersection $X=Q_0 \cap Q_1$ of two quadrics in $\mathbb P^5.$ Choose a line $L
Speaker: Dan Avritzer (Universidade Federal de Minas Gerais)