Seminars

We give an introduction on the Brauer-Manin obstruction to the Hasse principle and present some…

One may wonder what are the 'most frequent' properties of finitely generated of subgroups of…

This talk will be about a project aiming to illustrate geometry through puzzles. The puzzles are…

The five-element semigroups $A_2$ and $B_2$…

Let $k$ be an algebraicallly closed field of characteristic $p\geq 0$ and let $G$ be a linear…

We say that a regular semigroup $S$ is weakly generated by a set $X$ if it has no proper regular…

Descent theory is the study of local-to-global problems. After a quick review of simple…

This talk concerns numerical semigroups, i.e. cofinite submonoids $S$ of $\mathbb{N…

In 1875, Smith computed the determinant of the $n\times n$…

Let $G$ be a subgroup of $S_n$. What can be said on the number of conjugacy classes of $G$, in…

Point vortices are singular solutions of the 2-dimensional incompressible Navier-Stokes…

Two of the most important and fundamental results in the representation theory of a reductive…

The study of algebras of partial functions is an active area of research that investigates…

A celebrated theorem of B. H.

Coarse median spaces and groups were introduced by Bowditch in 2013.

If $W$ is a set of words in the alphabet $\mathfrak…

In this talk we will discuss some problems on endomorphisms of groups with special focus…

Using graphs as a tool to encode properties of groups is a well established approach to many…

A numerical semigroup $S$ is a cofinite…

Let G be a permutation group acting on a finite set Ω. A subset B of Ω is…