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
Online seminar |
Algebra, Combinatorics and Number Theory
A Kirkman Triple System (KTS) is called $m$-pyramidal if there exists a subgroup $G$ of its…
Speaker: Martino Garonzi
Seminário online |
Algebra, Combinatorics and Number Theory
Seguindo a ideia no artigo de Hu e Vercruysse [1], introduzimos morfismos parciais em uma…
Speaker: Francisco Gabriel Klock Campos Vidal
Seminário online |
Geometry and Topology
We consider germs of holomorphic vector fields at the origin in…
Speaker: Fernando Peirera Paulucio Reis
FC1 003 (and online) |
Algebra, Combinatorics and Number Theory
Let us consider the action of the general linear group $\mathrm{GL}_n(\mathbb{C})$ on the direct…
Speaker: Xabier García Martínez
FC1.031 |
Dynamical Systems
We show that quenched limiting hitting distributions are
compound Poisson distributed for…
Speaker: Lucas Amorim
Online seminar |
Algebra, Combinatorics and Number Theory
In this talk we present some properties of generalized torsion elements in groups.
Speaker: Raimundo de Araújo Bastos Júnior
Online Zoom meeting |
Geometry and Topology
We first investigate the interconnection of invariants of certain group actions and time-…
Speaker: Valerij Romanovskij
FC1 0.30 |
Geometry and Topology
Likelihood Geometry is the geometric study of the maximum likelihood estimation problem to an…
Speaker: Maximilian Wiesmann
Online Zoom meeting |
Semigroups, Automata and Languages
Numerical semigroups are the cofinite subsemigroups of the…
Speaker: Neeraj Kumar
Online seminar |
Algebra, Combinatorics and Number Theory
The Grassmann convexity conjecture by B. Shapiro and M. Shapiro admits
several equivalent…
Speaker: Nicolau Saldanha
Online Zoom meeting |
Geometry and Topology
Any Poisson bracket on a differentiable manifold can be written locally as the sum of two…
Speaker: Jorge Vitório Pereira
Online Zoom meeting |
Semigroups, Automata and Languages
In his paper from 2012, Nicolas Thiéry gives a formula for…
Speaker: Balthazar Charles
Seminário online |
Algebra, Combinatorics and Number Theory
Vamos considerar a conectividade de coberturas por dominós usando movimentos locais.
Speaker: Raphael de Marreiros
Room FC1.031, Mathematics Department, FCUP |
Algebra, Combinatorics and Number Theory
Speaker: Yiqiang Zhou
Online Zoom meeting |
Geometry and Topology
The tunneling effect predicted by B.Josephson (Nobel Prize, 1973) concerns the Josephson…
Speaker: Alexey Glutsyuk
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