In the 1950’s Davenport, Mirsky, Newman and Rado proved that if the integers are partitioned by…
Seminars
Future and Ongoing Seminars
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
Speaker: Martino Garonzi
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
The Gruenberg-Kegel graph of a group is defined as the graph whose vertices are the primes that…
Speaker: Diego Lucas Garcia
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
Chen, Erdős, and Staton asked in 1996 how many edges are required in an n-vertex graph to…
Speaker: António Girão
FC1 031 and online |
Algebra, Combinatorics and Number Theory
This has been an open question for more than 70 years. I'll review what is known, including some…
Speaker: Ken Brown
FC1 031 and online |
Algebra, Combinatorics and Number Theory
Quasi-hereditary algebras are a class of finite-dimensional associative algebras that appear…
Speaker: Tiago Cruz
FC1 031 and online |
Algebra, Combinatorics and Number Theory
Quasigroupoids and weak Hopf quasigroups are non-associative generalizations of groupoids and…
Speaker: Ramón González Rodríguez
FC1 031 and online |
Algebra, Combinatorics and Number Theory
Polynomial expansion concerns the heuristic expectation that, for a typical polynomial P in n…
Speaker: Nuno Arala Santos
Past Seminars
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
Online Zoom meeting |
Semigroups, Automata and Languages
We discuss expansions of monoids in the class of two-sided restriction monoids.
Speaker: Ganna Kudryavtseva
Online Zoom meeting |
CMUP Informal PHD Seminar
Sarcasm aside, in this talk we are going to take a look into a well-established theory of…
Speaker: Raquel Couto
Online Zoom meeting |
Semigroups, Automata and Languages
The twisted Brauer monoid $\mathcal{W}_n$ is the monoid generated by $s_1,\dots,s_{n-1},h_1,\…
Speaker: Mikhail V. Volkov
Online Zoom meeting |
Semigroups, Automata and Languages
Given a group defined by a presentation with a single defining relation $w=1…
Speaker: Robert Gray
Online Zoom meeting |
Semigroups, Automata and Languages
The study of Leavitt path algebras developed from foundational…
Speaker: John Meakin
Online Zoom meeting |
Semigroups, Automata and Languages
The notion of pointlike sets provides a way to “measure the essential…
Speaker: Samuel Herman
Online Zoom meeting |
Semigroups, Automata and Languages
I will present the latest development in my quest to understand whether the free product of two…
Speaker: Tara Brough
Online Zoom meeting |
Research Seminar Program (UC|UP MATH PhD program)
Program of the session:
10h30-10h45 - Virtual Reception: Carla…
Online Zoom meeting |
Semigroups, Automata and Languages
A positive integer $n$ is said to be a finitistic order for an element $u$ of a group $F$ if…
Speaker: José Carlos Costa
Online Zoom meeting |
Research Seminar Program (UC|UP MATH PhD program)
Program of the session:
10h30-10h45 - Virtual Reception: André…
Online Zoom meeting |
Semigroups, Automata and Languages
We prove a noncommutative generalisation…
Speaker: Jean-Eric Pin