PT | EN
Seminários, para a disseminação informal de resultados de investigação, trabalho exploratório de equipas de investigação, actividades de difusão, etc., constituem a forma mais simples de encontros num centro de investigação de matemática.
O CAMGSD regista e publica o calendário dos seus seminários há bastante tempo, servindo páginas como esta não só como um método de anúncio dessas actividades mas também como um registo histórico.
Para uma interface de busca completa ver a página de seminários do Departamento de Matemática.
Teoria Quântica do Campo Topológica
Hiro Lee Tanaka, Texas State University.
Broken.
We'll talk about joint work with Jacob Lurie regarding moduli stacks of geometric objects developing natural breaks. If time allows, I'll end with some speculation regarding a 3-D TFT arising from various G2 manifolds.
Sala P3.10, Pavilhão de Matemática
Herwig Hauser, University of Vienna.
Blowups and resolution of singularities:
The geometry of blowups.
The Mobius strip; collapsing the equator; exploding a point in the plane; geometric definition of blowups; the secant construction; pull-backs of curves under blowup.
Sala P3.10, Pavilhão de Matemática
Herwig Hauser, University of Vienna.
Blowups and resolution of singularities:
Working with blowups.
The algebraic definition of blowups; the blowup in affine charts; birational maps; the strict and total transforms of varieties and vector fields.
Sala P3.10, Pavilhão de Matemática
Herwig Hauser, University of Vienna.
Blowups and resolution of singularities:
The universal property.
Axiomatic definition of blowups; Cartier divisors; base change property; persistence properties.
Teoria Quântica do Campo Topológica
Anne-Laure Thiel, Université de Bourgogne.
On faithful representations of the braid group.
The famous Burau representation of the braid group is known to be unfaithful for braids with at least five strands. In the early 2000s, two constructions were provided to fix faithfulness: the first being the Lawrence–Krammer–Bigelow linear representation, hence proving linearity of braid groups, and the second being the Khovanov–Seidel categorical representation. In this talk, based on joint work in progress with Licata, Queffelec, and Wagner, I will investigate the interplay between these two representations.