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
FC6029 (DCC building) |
Semigroups, Automata and Languages
In this talk I will present recent results on the descriptional complexity of basic operations…
Speaker: Luca Prigioniero
Online Zoom Meeting |
Semigroups, Automata and Languages
In this talk, I will present recent results, obtained in collaboration with Valérie Berthé and…
Speaker: Herman Goulet-Ouellet
Online seminar |
Algebra, Combinatorics and Number Theory
This presentation is based on joint work with P. Shumyatsky. We study the class of all finite…
Speaker: Mateus Figueiredo
Zoom link |
Semigroups, Automata and Languages
Right-angled Artin groups (RAAGs) are fundamental objects in geometric group theory.
Speaker: Islam Foniqi
FC1.031 |
Dynamical Systems
Given a topologically mixing shift on a countable alphabet and a potential, we give criteria for…
Speaker: Mike Todd
FC1 007 (and online) |
Algebra, Combinatorics and Number Theory
Quasi-Frobenius rings were introduced by Nakayama in the study of representations of algebras…
Speaker: Yusuf Alagoz
FC1.031 |
Dynamical Systems
Using a deterministic perturbation result established by Galatolo and Lucena [1], we obtain…
Speaker: Odaudu Etubi
FC1 007 |
Algebra, Combinatorics and Number Theory
In this talk, extensions of solvable Lie algebras are considered. The method of central…
Speaker: Abror Khudoyberdiyev
Zoom link |
Semigroups, Automata and Languages
The membership problem for algebraic structures asks whether a given element belongs to a…
Speaker: Alexander Thumm
FC1 0.29 |
Algebra and Geometry
Title: …
Speaker: Veronica Calvo Cortes
FCUP (Room FC1.031) |
Dynamical Systems
This a scientific meeting gathering researchers, PhD students, master students and undergraduate…
Speaker: Romain Aimino and Jorge Freitas
FC1 007 |
Algebra, Combinatorics and Number Theory
The main objective of multiplicative ideal theory is to investigate the multiplicative structure…
Speaker: Haleh Hamdi
FC1.031 |
Dynamical Systems
In this talk, we will investigate the question of quantitative recurrence for ergodic dynamical…
Speaker: Dylan Bansard-Tresse
FC1.031 |
Dynamical Systems
The specification property, introduced in the 1970s by Bowen in the study of Axiom A…
Speaker: Alexandre Trilles
Zoom link |
Semigroups, Automata and Languages
Conjugacy languages, first introduced by Ciobanu and Hermiller, are a useful tool in…
Speaker: Gemma Crowe
Zoom link |
Semigroups, Automata and Languages
In this talk, I will explore the connection between algebraic language theory and topos theory,…
Speaker: Ryuya Hora
FC1 004 |
Algebra, Combinatorics and Number Theory
In the previous talk, we revisited some general aspects of the representation theory of the Lie…
Speaker: Lucas Queiroz Pinto
Zoom link |
Semigroups, Automata and Languages
We introduce an algorithm for computing a congruence on an inverse semigroup from a collection…
Speaker: Alex Levine
FC1.031 |
Dynamical Systems
I will discuss the outcome of periodic perturbations of attracting cyclic dynamics.
Speaker: Isabel S. Labouriau
Online seminar |
Algebra, Combinatorics and Number Theory
Nos últimos anos, houve um grande interesse em detectar propriedades do grupo fundamental $\pi_1…
Speaker: Lucas Corrêa Lopes