A major challenge in the study of the structure of the three-dimensional homology cobordism group is to understand the interaction between hyperbolic…
Categoria evento: Geometry Seminar
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…
Four-sided pegs fitting round holes fit all smooth holes – Andrew Lobb (Durham University)
Given a smooth Jordan curve and a cyclic quadrilateral (a cyclic quadrilateral is a quadrilateral that can be inscribed in…
L-spaces, taut foliations and fibered hyperbolic two-bridge links – Diego Santoro (SNS Pisa)
Heegaard Floer homology was defined by Ozsváth and Szabó in the early 2000s. It consists of a package of invariants…
Divisible convex sets with properly embedded cones – Gabriele Viaggi (University of Heidelberg)
An open subset of real projective space is said to be properly convex if it is contained in an affine…
Exotic 4-manifolds with signature zero – R. Inanç Baykur (University of Massachusetts Amherst)
We are going to talk about our recent construction of small symplectic 4-manifolds with signature zero, which include the smallest closed…
A class of locally inhomogeneous complete quaternionic Kähler manifolds – Alejandro Gil-García (Universität Hamburg)
We prove that the one-loop deformation of any quaternionic Kähler manifold in the class of c-map spaces is locally inhomogeneous…
Finiteness properties, subgroups of hyperbolic groups and complex hyperbolic lattices – Claudio Llosa Isenrich (Karlsruhe Institute of Technology)
Hyperbolic groups form an important class of finitely generated groups that has attracted much attention in Geometric Group Theory. We call…
Integral Simplicial Volume and Delta Complexity: find the differences – Federica Bertolotti (SNS Pisa)
Integral Simplicial Volume and Delta Complexity are invariants that try to capture the complexity of manifolds in terms of simplices…
Torsion function on character variety, divisor and multiplicity – Léo Bénard (Georg-August Universität Göttingen)
Reidemeister torsion is a combinatorial invariant, famous among other things for distinguishing finite quotients of the sphere S^3, the lenticular…