A reduced word for a permutation of the symmetric group is its own commutation class if it has…
Seminars
Future and Ongoing Seminars
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
Speaker: Diogo Soares
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
We introduce the concept of a nonassociative (i.e. not necessarily associative) inverse…
Speaker: Mikhailo Dokuchaev
Online |
Geometry and Topology
I will present recent joint work with Jérémy Toulisse and Richard Wentworth on a differential…
Speaker: Brian Collier
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
In the 1950’s Davenport, Mirsky, Newman and Rado proved that if the integers are partitioned by…
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 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
Past Seminars
FC1 0.31 |
Geometry and Topology
A tangle T is a pair formed by a ball and collection of properly embedded disjoint arcs in B.…
Speaker: João Nogueira
Online Zoom meeting |
Semigroups, Automata and Languages
A ring $R$ is called Dedekind finite (or directly finite) if it…
Speaker: Benjamin Steinberg
Room FC1.031, Mathematics Department, FCUP |
Algebra, Combinatorics and Number Theory
We aim to study Morita theory for tensor triangulated categories.
Speaker: Yuying Xu
FC1 0.31 |
Geometry and Topology
We are interested in equivariant embeddings of homogeneous spaces. Given the standard action…
Speaker: Arame Diaw
FC1 0.31 |
Geometry and Topology
Sasaki manifolds are the odd dimensional analogues of Kähler manifolds. In this talk, I will…
Speaker: Pedram Hekmati
Department of Mathematics of Faculty of Sciences of University of Porto |
Live streamed at https://fc-up…
Speaker: Kenier Castillo, Semyon Yakubovich, Claude Brezinski, Pascal Maroni e Michela Redivo-Zaglia
CMUP, FCUP |
Site do seminário: https://www.mat.uc.pt/~pgsfop/index.html
Speaker: Claude Brezinski, Pascal Maroni e Michela Redivo-Zaglia
FC1 0.31 |
Geometry and Topology
On a symplectic manifold $M$ with a hamiltonian action by a group $K$, it is natural to perform…
Speaker: Thomas Baier
FC1 0.31 |
Geometry and Topology
Speaker: João Nuno Mestre
Online Zoom meeting |
Semigroups, Automata and Languages
Endowed with the operation of setwise multiplication induced by a multiplicatively written…
Speaker: Salvatore Tringali
FC1 0.31 |
Geometry and Topology
After reviewing the formalism of Simpson's shapes for the non-abelian Hodge theory associated to…
Speaker: Emilio Franco
FC1 0.31 |
Geometry and Topology
In a work in progress with Gabriel …
Speaker: Frank Loray
Room FC6029 (CS Bldg., FCUP) and Online |
Semigroups, Automata and Languages
Weighted automata were designed by M.-P. Schützenberger to recognize languages beyond regular…
Speaker: Sylvain Lombardy
Room FC6029 (CS Bldg., FCUP) and Online |
Semigroups, Automata and Languages
The topic of this talk is the transformation of rational expressions into finite automata, a…
Speaker: Jacques Sakarovitch
Online Zoom meeting |
Semigroups, Automata and Languages
A seminal paper published in 2012 by Berstel et al.
Speaker: Alfredo Costa
Online Zoom meeting |
Geometry and Topology
The Minimal Model Program (MMP) is a far reaching conjecture in birational geometry which aims…
Speaker: Tiago Duarte Guerreiro
FC1 029 |
Algebra, Combinatorics and Number Theory
(This is joint work with J. Delgado and M.
Speaker: Enric Ventura
FC1 029 |
General seminar of CMUP
In this talk we will present new aspect of Frobenius manifolds.
The Frobenius manifolds…
Speaker: Noémie Combe
Online Zoom meeting |
Semigroups, Automata and Languages
The center of a group consists of all elements which commute with everything.
Speaker: David Stanovský
Geometry and Topology
We recall the construction of a fundamental differential system of Riemannian geometry and…
Speaker: Rui Albuquerque