TBA…
Categoria evento: Geometry Seminar
TBA – James Farre (Universität Heidelberg)
TBA…
Shadow-complexity and trisection genus – Hironobu Naoe (Chuo University)
A shadow of a closed 4-manifold is a 2-complex suitably embedded in the 4-manifold, which can be treated as a…
Costruzione di TQFT di dimensione 3 e 4 – François Costantino (Université de Toulouse III)
Comincerò questo seminario ricordando la definizione delle TQFT in dimensione n e alcuni fatti generali (e.g. la definizione degli invarianti…
The Giroux correspondence via convex surfaces – Vera Vertési (Universität Wien)
The “hard direction” of the Giroux correspondence states that any two open books representing the same contact structure are related…
Pretalk: Contact structures and open books – Filippo Bianchi (Università di Pisa)
This will be a very rough introduction to contact structures and open book decompositions, with the main definitions and some…
Handle numbers of knots and sutured manifolds – Kenneth L. Baker (University of Miami)
The handle number, or Morse-Novikov number, of a knot counts the minimum number of handles needed for a circular Heegaard…
Pretalk: Handle numbers of knots and sutured manifolds – Kenneth L. Baker (University of Miami)
Introductory talk for the Geometry Seminar.…
Homology cobordism and the geometry of hyperbolic three-manifolds – Francesco Lin (Columbia University)
A major challenge in the study of the structure of the three-dimensional homology cobordism group is to understand the interaction between hyperbolic…
Acyclicity in bounded cohomology – Marco Moraschini (Università di Bologna)
Bounded cohomology is an invariant of groups introduced by Johnson in the 70s and then extensively studied both in geometric…