[Seminário] On the Heun equation

Oradora: Galina Filipuk, Faculty of Mathematics, Informatics and Mechanics, University of Warsaw, Poland Título: On the Heun equation Data, hora e local: 9 de julho de 2021, às 14h, na plataforma Zoom no seguinte endereço Resumo/Abstract: Heun equation is a Fuchsian equation with 4 singuarities. It appears in many areas of mathematical physics. It has a…


What is… Ramsey theory?

Manuel Silva, Universidade Nova de Lisboa, Portugal 23 de Junho de 2021, 16 horas no endereço Zoom: ID: 830 3058 0321 | Palavra chave: xyz Resumo/Abstract: In 1928 Frank P. Ramsey, motivated by philosophical considerations, proved a theorem in his paper “On a problem of formal logic”. This result can be viewed as a…


What is… a moduli space?

André Oliveira, CMUP & UTAD, Portugal 19 de maio de 2021, às 16h no endereço Zoom: ID: 830 3058 0321 | Palavra chave: xyz Resumo/Abstract: Mathematicians like to classify and organize mathematical objects, up to some fixed equivalence relation. Sometimes the objects in question do not admit continuous variations and so the classification is…



Orador: Yang Chen, Departamento de Matemática, Universidade de Macau Título: Smallest Eigenvalue of Large Hankel Matrices at Critical Point: comparing a Conjecture with parallelized computation Data, hora e local: 14 de abril de 2021, às 16h, na plataforma Zoom no endereço Resumo/abstract: We propose a novel parallel numerical algorithm for calculating the smallest eigenvalues…


What is … Symbolic Dynamics?

Orador: Yuri Lima, Universidade Federal do Ceará, Brasil. Título: What is … Symbolic Dynamics? Data, hora e local: 17 de março de 2021, às 15h na plataforma Zoom no endereço ID: 830 3058 0321 Palavra chave: xyz Resumo: Symbolic dynamics is a very useful tool that, in a nutshell, allows to represent dynamical systems…



Orador: Mariam Bouhmadi-López, University of Basque Country and Ikerbasque, Spain Título: Cosmological constraints of phantom dark energy models Data, hora e local: 14 de outubro de 2020, às 10h, na Sala de Reuniões do Departamento de Matemática.