Centre for Mathematics, University of Coimbra

Seminars

Algebra, Logic and Topology

Drazin inverses in (dagger) categories

2025-08-19

Speaker: Jean-Simon Pacaud Lemay (Macquarie Univ., Sydney, Australia)

Drazin inverses are a special kind of generalized inverse that have been extensively studied and have many applications in ring theory, semigroup theory, and matrix theory. Drazin inverses can also be defined for endomorphisms in any category. A natural question is whether one can extend the...

A general approach to pointfree \(T_0\) spaces

2025-08-19

Speaker: Anna Laura Suarez (Univ. Western Cape, South Africa)

The classical dual adjunction between frames and spaces, given by the functors \( O\colon \mathbf{Top}\to\mathbf{Frm} \) and \( \mathsf{pt}\colon\mathbf{Frm}\to\mathbf{Top} \), restricts to a dual equivalence between sober spaces and spatial frames. Another pointfree approach to the study of...

Large random tilings of a hexagon

2025-09-15

Speaker: Arno Kuijlaars (KU Leuven, Belgium)

TBA...

Quasi-orthogonal polynomials and positive quadrature on the unit circle

2025-09-18

Speaker: Ruymán Cruz Barroso (University of La Laguna, Spain)

TBA...

TBA

2025-10-06

Speaker: Vivek Sahai (Lucknow Univ., India)

TBA...

Marcinkiewicz exponent and boundary value problems for iterated Cauchy-Riemann and Dirac operators in fractal domains

2025-11-04

Speaker: Carlos Daniel Tamayo Castro (Instituto Politécnico Nacional, Mexico)

TBA...

Special Colloquium on Fraudulent Publishing in Mathematical Sciences

2025-11-17

Speaker: Ilka Agricola (Chair of the Committee on Electronic Information and Communication of the IMU, Philipps-Universität Marburg, Germany)

TBA moderated by Jorge Buescu (EMS Vice-President, University of Lisbon, Portugal)...

On extremal properties of Laplace transform and non uniqueness solutions of the heat equation

2025-12-11

Speaker: João Fontinha (Univ. Lisbon, Portugal)

TBA...

TBA

2025-12-15

Speaker: Karl Grosse-Erdmann (Université de Mons, Belgium)

TBA...