The concept of a rank function on an additive category with cokernels, or more generally, on one…
Seminars
Future and Ongoing Seminars
FC1 1.09 |
Geometry and Topology
Abstract: I will review the application of Hamiltonian flows in imaginary time to problems in…
Speaker: João Luís Pimentel Nunes
Past Seminars
Online Zoom meeting |
Semigroups, Automata and Languages
Boolean inverse monoids and $MV$-algebras are both supposed to be generalizations of Boolean…
Speaker: Mark Lawson
Online Zoom meeting |
Semigroups, Automata and Languages
If $R$ is a finite commutative ring, then the affine monoid of…
Speaker: M. Hossein Shahzamanian
Online Zoom meeting |
Algebra, Combinatorics and Number Theory
Building on the classification of modules for algebraic groups with finitely many orbits on…
Speaker: Aluna Rizzoli
Online Zoom meeting |
Semigroups, Automata and Languages
We consider a natural generalization of the concept of order of a (torsion) element: the order…
Speaker: Enric Ventura
Online Zoom meeting |
Algebra, Combinatorics and Number Theory
A central polynomial of an algebra A is a polynomial f in non-commutative…
Speaker: Carla Rizzo
Online Zoom meeting |
Semigroups, Automata and Languages
Classical Morita theory was first developed for rings with identity by Kiiti Morita.
Speaker: Valdis Laan
Online Zoom meeting |
Semigroups, Automata and Languages
Normality has been introduced by É. Borel more than one hundred…
Speaker: Olivier Carton
Online Zoom meeting |
CMUP Informal PHD Seminar
Riemann surfaces are the simplest spaces to which one can extend the tech…
Speaker: Pedro Miguel Silva
Online Zoom meeting |
Algebra, Combinatorics and Number Theory
Profinite groups in which the centralizer of any non-identity element is abelian (i.e.,…
Speaker: Theo A. D. Zapata
Online Zoom meeting |
Semigroups, Automata and Languages
We provide a general framework for computing mixing times of finite Markov chains when its…
Speaker: Anne Schilling
Online Zoom meeting |
Algebra, Combinatorics and Number Theory
Given an extension L/K of number fields, we say that the Hasse norm principle (HNP) holds if…
Speaker: André Macedo
Online Zoom meeting |
Semigroups, Automata and Languages
The multiplicative semigroup $M_n(F)$ of $n\times n$ matrices over a field $F$ is well…
Speaker: Victoria Gould
Online Zoom meeting |
CMUP Informal PHD Seminar
This talk is about some special type of profinite presentations called ω-presentations…
Speaker: Herman Goulet Ouellet
Online Zoom meeting |
Semigroups, Automata and Languages
A variety of algebras is said to be finitely based if it has a finite basis of its identities. A…
Speaker: Sergey Gusev
Online Zoom meeting |
Semigroups, Automata and Languages
An inverse monoid $M$ is $F$-inverse…
Speaker: Karl Auinger
Online Zoom meeting |
CMUP Informal PHD Seminar
We will explain how Kan extensions give a concise construction of the nerve of an internal…
Speaker: Rui Prezado
Online Zoom meeting |
Semigroups, Automata and Languages
In this talk, I will discuss extensions of semigroups, which are defined using Eilenberg-…
Speaker: Mikołaj Bojańczyk
Online Zoom meeting |
Semigroups, Automata and Languages
We will consider the computational complexity of decision problems in which we are given a set…
Speaker: Trevor Jack
Online Zoom meeting |
CMUP Informal PHD Seminar
The main goal of this talk is to present a geometric version of the bounded cancellation…
Speaker: André Carvalho
Online Zoom meeting |
Semigroups, Automata and Languages
The subgroup membership problem for a group $G$ asks whether a given group element $g$ from $G$…
Speaker: Markus Lohrey