The commuting graph of a finite non-commutative semigroup $S$ is the simple graph whose vertices…
Seminars
Future and Ongoing Seminars
FC1 031 and online |
Algebra, Combinatorics and Number Theory
Speaker: Tânia Paulista
FC1.031 |
Dynamical Systems
We introduce a class of linear bounded invertible operators on Banach spaces, called shift…
Speaker: Udayan B. Darji
FC1 031 and online |
Algebra, Combinatorics and Number Theory
Kruskal’s uniqueness theorem gives a simple criterion ensuring that a 3-way tensor admits a…
Speaker: Alexander Taveira Blomenhofer
FC1 031 and online |
Algebra, Combinatorics and Number Theory
I will review some classical examples of groups whose strictly descending chains of subgroups…
Speaker: Sam Corson
Past Seminars
FC1 030 |
Algebra, Combinatorics and Number Theory
We introduce the Jordan-strict topology on the multipliers algebra of a JB*-algebra.
Speaker: Jorge Garcés
FC1 030 |
Algebra, Combinatorics and Number Theory
In 2004, Fit-Florea and Matula presented an algorithm for computing the discrete logarithm…
Speaker: Bianca Sosnovski
Room 0.05 |
Geometry and Topology
Moduli spaces of tropical objects can often be obtained as tropicalization of suitable…
Speaker: Margarida Melo and Filippo Viviani
Online Zoom meeting |
Semigroups, Automata and Languages
Wang tilings is an important class of tilings…
Speaker: Sébastien Labbé
FC1 029 |
Algebra, Combinatorics and Number Theory
A transposed Poisson algebra is a triple $(\mathcal{L},\cdot,[\cdot,\cdot])$…
Speaker: Mykola Khrypchenko
Geometry and Topology
We describe the geometry and the topology of generalized polygon spaces with “edges” in…
Speaker: Carlos Florentino
Online Zoom meeting |
Semigroups, Automata and Languages
In a 2013 paper with S. Puzynina and L.
Speaker: Anna Frid
Online Zoom meeting |
Semigroups, Automata and Languages
An inverse monoid is called special if it is defined by a presentation where all the defining…
Speaker: Robert Gray
FC1.004 |
CMUP Informal PHD Seminar
In this talk we present some lemmas concerned with a recent work about zeros of shifted…
Speaker: Pedro Ribeiro
Online Zoom meeting |
Semigroups, Automata and Languages
The associative spectrum was introduced by Csákány and Waldhauser in 2000 and has appeared in…
Speaker: Erkko Lehtonen
FC 0.31 |
Geometry and Topology
In this talk I will explain how virtual resolutions are useful to study the geometrical…
Speaker: Eliana Duarte
Online Zoom meeting |
Semigroups, Automata and Languages
In this talk I will give an overview of the fundamental algorithms for computing…
Speaker: James Mitchell
FC1.031 |
CMUP Informal PHD Seminar
Rational and recognizable subsets of groups are part of an important connection between the…
Speaker: André Carvalho
Room 1.19 |
Geometry and Topology
For some classes of hyperbolic surfaces, all locally finite ergodic measures invariant under…
Speaker: DR. Cheikh lo
FC1 030 |
Algebra, Combinatorics and Number Theory
In this talk, an overview will be presented about hom-algebra structures, with focus on…
Speaker: Sergei Silvestrov
Online Zoom meeting |
Semigroups, Automata and Languages
In this talk I will present a certain hierarchy of diagrammatic monoids which can be unified by…
Speaker: Volodymyr Mazorchuk
FC1 030 |
Algebra, Combinatorics and Number Theory
Hypercubes are arguably one of the most fundamental and most studied objects in Combinatorics.…
Speaker: António Girão
Room 1.20 |
Geometry and Topology
Compact Hyperkaeler manifolds play a central role in complex algebraic geometry, as they arise…
Speaker: Valeria Bertini
Room M030, DMat-FCUP |
Computational Mathematics
Abstract
Speaker: Maria Bras-Amorós
Online Zoom meeting |
Semigroups, Automata and Languages
The study of the subgroup fixed by an automorphism of a free group started with the work of…
Speaker: André Carvalho