Chen, Erdős, and Staton asked in 1996 how many edges are required in an n-vertex graph to…
Seminars
Future and Ongoing Seminars
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
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 1.09 |
Geometry and Topology
Abstract: I will review the application of Hamiltonian flows in imaginary time…
Speaker: João Luís Pimentel Nunes
FC1 007 and Online |
Algebra, Combinatorics and Number Theory
The Hasse principle is the idea that a Diophantine equation over the rational numbers should…
Speaker: Nuno Freitas
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 seminar |
Algebra, Combinatorics and Number Theory
A celebrated theorem of B. H.
Speaker: Cristina Acciarri
FC1.029 |
CMUP Informal PHD Seminar
Coarse median spaces and groups were introduced by Bowditch in 2013.
Speaker: André Carvalho
Online Zoom meeting |
Semigroups, Automata and Languages
If $W$ is a set of words in the alphabet $\mathfrak…
Speaker: Olga B. Sapir
FC1.006 |
CMUP Informal PHD Seminar
In this talk we will discuss some problems on endomorphisms of groups with special focus…
Speaker: André Carvalho
Online seminar |
Algebra, Combinatorics and Number Theory
Using graphs as a tool to encode properties of groups is a well established approach to many…
Speaker: Daniele Nemmi
Online Zoom meeting |
Semigroups, Automata and Languages
A numerical semigroup $S$ is a cofinite…
Speaker: Manuel Delgado
Online seminar |
Algebra, Combinatorics and Number Theory
Let G be a permutation group acting on a finite set Ω. A subset B of Ω is…
Speaker: Mariapia Moscatiello
Online Zoom meeting |
Semigroups, Automata and Languages
A language of finite words is star-free when it can be built from letters using Boolean…
Speaker: Marc Zeitoun
Online seminar |
Algebra, Combinatorics and Number Theory
A Steiner triple system STS(v) is a set of triples of {1, 2, . . . , v} such that every pair of…
Speaker: Martino Garonzi
Online seminar |
Algebra, Combinatorics and Number Theory
If G is a finite group and k a field of characteristic p, the group algebra kG can be written…
Speaker: John MacQuarrie
Online Zoom meeting |
Semigroups, Automata and Languages
We consider the rational subset membership problem for Baumslag-Solitar groups.
Speaker: Georg Zetzsche
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