Seminars

Online Zoom meeting |
Semigroups, Automata and Languages

The center of an inverse semigroup

The center of a group consists of all elements which commute with everything.

Speaker: David Stanovský
Geometry and Topology

On three recent applications of a fundamental differential system of Riemannian geometry

We recall the construction of a fundamental differential system of Riemannian geometry and…

Speaker: Rui Albuquerque
FC1 007 |
Algebra, Combinatorics and Number Theory

$\mathcal{U}(\mathfrak{h})$-free modules and weight representations

The classification of simple modules for a simple Lie algebra $\mathfrak{g}$ seems beyond reach…

Speaker: Eduardo Monteiro Mendonça
FC1.031 |
Geometry and Topology

Baum-Bott residue currents

Consider a holomorphic foliation F on a complex manifold.

Speaker: Lucas Kaufmann
Online Zoom meeting |
Semigroups, Automata and Languages

The overlap gap between left-infinite and right-infinite words

In this talk I will present ultimate periodicity properties related to overlaps between the…

Speaker: Conceição Nogueira
FC1.031 |
Dynamical Systems

SIR model: strange attractors and bifurcations

This talk is divided in…

Speaker: João Carvalho
Online Zoom meeting |
Semigroups, Automata and Languages

Dehn functions of one-relation monoids

The Dehn function for a semigroup or group $M$…

Speaker: Carl-Fredrik Nyberg brodda
Room FC1 0.31 |
Geometry and Topology

Mirror symmetry on Higgs bundles moduli spaces

This talk will be an overview on Higgs bundles moduli spaces and on the geometry of the…

Speaker: André Oliveira
FC1 030 |
Algebra, Combinatorics and Number Theory

On the strict topology of the multipliers of a JB$^*$-algebra

We introduce the Jordan-strict topology on the multipliers algebra of a JB*-algebra.

Speaker: Jorge Garcés
Room 0.05 |
Geometry and Topology

Lie algebroid connections, twisted Higgs bundles and motives of moduli spaces

In this talk we consider moduli spaces of flat Lie algebroid connections on a Riemann surface.…

Speaker: David Alfaya
FC1 030 |
Algebra, Combinatorics and Number Theory

Application of Semi-Primitive Roots to the Computation of the Discrete Logarithm Modulo $2^{k}$

In 2004, Fit-Florea and Matula presented an algorithm for computing the discrete logarithm…

Speaker: Bianca Sosnovski
Room 0.05 |
Geometry and Topology

Tropicalization of the universal Jacobian: logarithmic and non-archimedian view points

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

Structure of Jeandel-Rao aperiodic Wang tilings

Wang tilings is an important class of tilings…

Speaker: Sébastien Labbé
FC1 006 |
General seminar of CMUP

Zeta function of projective varieties

The main goal of the present talk is to define the local and global zeta function of algebraic…

Speaker: Ariel Pacetti
FC1 029 |
Algebra, Combinatorics and Number Theory

Transposed Poisson structures on Block and Witt type Lie algebras

A transposed Poisson algebra  is a triple $(\mathcal{L},\cdot,[\cdot,\cdot])$…

Speaker: Mykola Khrypchenko
Geometry and Topology

Geometry and topology of generalized polygon spaces

We describe the geometry and the topology of generalized polygon spaces with “edges” in…

Speaker: Carlos Florentino
Online Zoom meeting |
Semigroups, Automata and Languages

On the conjecture of unbounded palindromic length

In a 2013 paper with S. Puzynina and L.

Speaker: Anna Frid
Online Zoom meeting |
Semigroups, Automata and Languages

The geometry of Schutzenberger graphs and subgroups of special inverse monoids

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

A Lemma connected with special functions with two indices

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

Associative spectra of graph algebras

The associative spectrum was introduced by Csákány and Waldhauser in 2000 and has appeared in…

Speaker: Erkko Lehtonen