Seminars

Abstract. In this talk we will focus on semicomplete Halphen vector fields.

In 1985, Bucher, Ehrenfeucht and Haussler studied derivation relations associated with a given…

Let $I_n$ be the symmetric inverse semigroup on $…

Finite rank plactic monoids are infinite monoids arising from a natural combinatorial…

The class of regular languages is the smallest class of languages containing the finite…

The variety (of finite semigroups) DAb is the class of finite semigroups whose regular 𝒟-classes…

In 2017, Baraviera and Duarte extended a classical theorem from Le Page.

The Finite Index Basis Theorem is an elegant result connecting bifix codes, symbolic dynamical…

Impulsive Dynamical Systems (IDS) can be seen as suitable mathematical models of real…

Let $Q(x,y)=ax^{2}+bxy+cy^{2}$ be a real and positive definite quadratic form. The classical…

Abstract:

In this talk, I intend to give a view of the contents of the book with the same title, which…

PROGRAM

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…