In the 1950’s Davenport, Mirsky, Newman and Rado proved that if the integers are partitioned by…
Seminars
Future and Ongoing Seminars
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
Speaker: Martino Garonzi
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
The Gruenberg-Kegel graph of a group is defined as the graph whose vertices are the primes that…
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 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 0.06 |
Geometry and Topology
A complex space X is said to be hyperbolic if every holomorphic…
Speaker: Giancarlo Urzúa
Room 1.09 |
Geometry and Topology
One of the most beautiful objects of classical geometry is the Kummer Surface, that was studied…
Speaker: Dan Avritzer
DM-FCUP Room 0.07 |
Research Seminar Program (UC|UP MATH PhD program)
Room FC1 030, DMat-FCUP |
Semigroups, Automata and Languages
We generalize to extensions by free groups ($G \rtimes F_n$) the classical theory of Stallings…
Speaker: Jordi Delgado
Room FC1.031 |
Dynamical Systems
TBA
Speaker: Sören Schwenker
Room FC1.005 |
Dynamical Systems
In this seminar we shall introduce the Conley index of an isolated invarant set of a flow on a local
Speaker: Hector Barge
Room FC1.031 |
Dynamical Systems
Os célebres resultados de S.Newhouse ([N]) mostram que a bifurcação de uma tangência homoclínic
Speaker: Sebastian Perez
Room FC1.031 |
Dynamical Systems
In this seminar, we explore the chaotic set near a homoclinic cycle to a hyperbolic bifocus at whic
Speaker: Alexandre Rodrigues
Room FC1.031 |
Dynamical Systems
A nonhyperbolic ergodic measure is an ergodic invariant measure with one Lyapunov exponent equal zer
Speaker: Dominik Kwietniak
Room FC1.005 |
Dynamical Systems
In this talk we intend to present the denition of mean topological dimension for a topological dyna
Speaker: Fagner Bernardini Rodrigues
Room ? |
Geometry and Topology
Let Λ be a D-algebra in the sense of Bernstein and Beilinson. Higgs bundles, vector bundles with fl
Speaker: Emilio Franco
Room 0.30 |
Geometry and Topology
Non-abelian gerbes are a generalization of principal G-bundles, involving the replacement of the Lie
Speaker: Roger Picken
Room M031 |
Dynamical Systems
Takens' last problem. Whether are there persistent classes of smooth dynamical systems such that the
Speaker: Teruhiko Soma
Room M031 |
Dynamical Systems
Colli-Vargas' conjecture. Every two-dimensional diffeomorphism with homoclinic tangency can be appro
Speaker: Shin Kiriki
Geometry and Topology
We generalize the classical MacDonald formula for smooth curves to reduced curves with planar singul
Speaker: Filippo Viviani
Room 0.30 |
Geometry and Topology
Among abelian varieties, Jacobians of smooth projective curves C have the important property of bein
Speaker: Margarida Melo
Room M031 |
Dynamical Systems
Estudaremos conjuntos hiperbólicos invariantes de certos produtos tortos com expansão uniforme nas
Speaker: Katrin Gelfert
Room 0.29 |
Geometry and Topology
We present a recent result about the Riemannian metric structure of the tangent manifold TM, the tot
Speaker: Rui Albuquerque
Room M031 |
Dynamical Systems
Estudamos medidas invariantes para os fluxos de Cherry, isto é: fluxos no toro bidimensional que po
Speaker: Edson Vargas
Room M031 |
Dynamical Systems
Estudaremos produtos tortos transitivos modelados sobre um "shift" completo cujas funções nas fibr
Speaker: Lorenzo Díaz