# Seminars

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
FC1 005 |
General seminar of CMUP

### An overview of gradient elliptic systems with cooperative or competitive interactions: existence, asymptotics and qualitative properties

Abstract:  We deal with semilinear systems of stationary reaction-diffusion equations…

Speaker: Hugo Tavares
FC 0.31 |
Geometry and Topology

### Complexity reduction via Virtual Resolutions

In this talk I will explain how virtual resolutions are useful to study the geometrical…

Speaker: Eliana Duarte
Geometry and Topology

### Locally conformally SKT structures

As is well known, a Hermitian metric on a complex manifold is called SKT (strong K\”ahler with…

Speaker: Ana Cristina Ferreira
Online Zoom meeting |
Semigroups, Automata and Languages

### Computing with finitely presented semigroups and monoids

In this talk I will give an overview of the fundamental algorithms for computing…

Speaker: James Mitchell
FC1.031 |
CMUP Informal PHD Seminar

### Subsets of groups: rational and context-free

Rational and recognizable subsets of groups are part of an important connection between the…

Speaker: André Carvalho
Room 1.19 |
Geometry and Topology

### NON-WEAKLY TAME SURFACES: ERGODICITY AND CONSERVATIVITY OF THE HOROCYCLE FLOW

For some classes of hyperbolic surfaces, all locally finite ergodic measures  invariant under…

Speaker: DR. Cheikh lo
FC1 030 |
Algebra, Combinatorics and Number Theory

### Hom-algebra structures

In this talk, an overview will be presented about hom-algebra structures, with focus on…

Speaker: Sergei Silvestrov
FC1.031 |
Dynamical Systems

### Lyapunov exponents for transfer operator cocycles of random one-dimensional maps

Non-autonomous or random dynamical systems provide useful and flexible models to investigate…

Speaker: Cecilia Gonzalez Tokman