Centre for Mathematics, University of Coimbra

Seminars

TBA

2024-09-20

Speaker: Lubos Pick (Charles University, Prague, Czech Republic)

TBA...

TBA

2024-09-20

Speaker: Luís Daniel Abreu (NuHAG, University of Vienna, Austria)

TBA...

Differential relations and other properties of two families of 2-orthogonal polynomial eigenfunctions

2024-09-20

Speaker: Teresa A. Mesquita (Polytechnic Institute of Viana do Castelo & CMUP)

TBA...

Gap labelling for periodic Jacobi matrices on trees

2024-09-24

Speaker: Barry Simon (Caltech, USA)

https://www.mat.uc.pt/~pgsfop/activities.html...

Pointfree theories of T0 spaces

2024-09-24

Speaker: Anna Laura Suarez (CMUC, Univ. Coimbra)

Pointfree topology regards certain order-theoretical structures, called frames, as topological spaces. We regard frames as spaces in virtue of the lattice of open set of every space being a frame. Not all frames are lattices of open sets; nonetheless, studying all frames as spaces offers...

Some recent results on algebras of partial functions

2024-09-24

Speaker: Brett McLean (Ghent Univ., Belgium)

We will investigate algebraic structures that are isomorphic to a set of partial functions equipped with selected operations (e.g. composition, intersection, etc.). I will spend most of the time describing results about completely representable algebras - these are the algebras that can be...

A good projective resolution of Weyl modules

2024-09-25

Speaker: Ana Paula Santana (CMUC, Univ. Coimbra)

We construct what we call a "good" projective resolution of Weyl modules for the general linear group over an arbitrary commutative ring.From this, we obtain a resolution of the co-Specht modules for the symmetric group by permutation modules.These resolutions allow us to generalize in...

Operations in Khovanov homology

2024-10-09

Speaker: Federico Moran (Universidad Autónoma de Madrid, Spain)

I will give an introduction to Khovanov homology, a link invariant introduced by Khovanov twenty-five years ago, and then explain how to construct operations on this link invariant following the work of Lipshitz and Sarkar on Khovanov spectra....

Right-preordered groups from a categorical perspective

2024-10-22

Speaker: Maria Manuel Clementino (CMUC, Univ. Coimbra)

Following the study of the categorical features of preordered groups of [1], in this talk we study the category of right-preordered groups and monotone homomorphisms. We start by showing that this category has exactly the same exactness properties as the category of preordered groups....

Rectifiability in Carnot groups

2024-12-03

Speaker: Daniela Di Donato (University of Pavia, Italy)

TBA...