Conferences - Seminars
26APR
13:00-14:00
MA A3 30
Groups acting on rooted trees and representations on the boundary
Every action of a group on a rooted tree induces an action on the boundary of the tree. This action yields various representations of the group on spaces of functions on the boundary. In this talk we discuss the structure of such representations. After reviewing of the basic concepts, we will introduce locally 2-transitive actions ...
Read more about "Groups acting on rooted trees and representations on the boundary"
By Steffen Kionke (KIT)
27APR
15:15-16:00
MA A1 10
A Bayesian General Linear Modeling Approach to Cortical Surface fMRI Data Analysis
By Ass. Prof. David Bolin, Chalmers University of Technology
01MAY
10:15-11:30
CM 1 113
Topology Seminar: C*-superrigidiity of nilpotent groups
It is a classical problem to recover a discrete group from various rings or algebras associated with it, such as the integral group ring (cf. the Whitehead group and the Whitehead torsion). By analogy, in an operator algebraic framework we want to recover torsion-free groups from certain topological completions of the complex group ring, such ...
Read more about "Topology Seminar: C*-superrigidiity of nilpotent groups"
By Sven Raum (EPFL)
08MAY
10:15-11:15
CM 1 113
Topology Seminar: Stratified homotopy theory
Stratified spaces appear as natural objects in singularity theory. Goresky and MacPherson introduced intersection cohomology to extend cohomological properties of closed manifolds to stratified spaces, and it proved to be a powerful tool to study those objects. However, intersection cohomology is not homotopy invariant, rather it is invariant with respect to homotopies that "preserve" the ...
Read more about "Topology Seminar: Stratified homotopy theory"
By Sylvain Douteau (Université de Picardie)
15MAY
09:15-10:15
CM 1 113
Topology Seminar: Combinatorial models for stable homotopy theory
We will recall the definition of dendroidal sets as a generalization of simplicial sets, and present the connection (Quillen equivalence) to connective spectra which gives a factorization of the so-called K-theory spectrum functor from symmetric monoidal categories to spectra. We will present a common generalization of two results of Thomason: 1) posets model all homotopy ...
Read more about "Topology Seminar: Combinatorial models for stable homotopy theory"
By Matija Bašić (University of Zagreb)
15MAY
By Dr Tommaso TADDEI (Université Pierre et Marie Curie, FR)
24MAY
15:15-16:00
MA A1 10
Learning determinantal point processes
Statistics seminar
Read more about "Learning determinantal point processes"
By Prof. Philippe Rigollet, MIT
01JUN
By Ass. Prof. Patrick Rubin-Declanchy, University of Bristol
04JUN
08JUN
08JUN
09:00-17:00
BI A0 448
Ideals and exceptional sets in Polish spaces
Exceptional sets play an important role in numerous branches of mathematics, for instance in measure theory, topology, harmonic and complex analysis, Banach space theory, algebraic geometry, combinatorics, probability and ergodic theory, set theory and descriptive set theory, just to mention a few. Exceptional sets describe notions of smallness from various points of view, some notable ...
Read more about "Ideals and exceptional sets in Polish spaces"
18JUN
22JUN
22JUN
09:00-17:00
BI A0 448
Descriptive set theory conference
This is the last conference of the semester and will be of a more general nature than the earlier more specialized conferences and workshops of the program. It will cover broad aspects of descriptive set theory and its connections with other areas of mathematics.
Read more about "Descriptive set theory conference"
21JUN
17:15-18:15
BI A0 448
Professeur Slawomir Solecki Bernoulli Lecture - Compact Spaces and Logic
Fraïssé theory is a method in classical Model Theory of producing canonical limits of certain families of finite structures. For example, the random graph is the Fraïssé limit of the family of all finite graphs. It turns out that this method can be dualized, with the dualization producing projective Fraïssé limits, and applied to the ...
Read more about "Professeur Slawomir Solecki Bernoulli Lecture - Compact Spaces and Logic"
By Slawomir Solecki (Cornell University)
16JUL
27JUL
27JUL
09:00-17:00
BI A0 448
Introduction to Partition Functions
A mix of introductory lectures and research talks on partition functions and techniques for their computation, including methods such as Markov chains, correlation decay, belief propagation and convex optimization.
Read more about "Introduction to Partition Functions"
01OCT
05OCT
05OCT
09:00-17:00
BI A0 448
Theoretical Challenges in Partition Functions
The goal of this workshop is to find translations and connections between various approaches to compute partition functions and, at the same time, advance the state-of-the-art in each.
Read more about "Theoretical Challenges in Partition Functions"
12NOV
16NOV
16NOV
09:00-17:00
BI A0 448
Applications of Partition Functions
The goal of this workshop is to discuss the wide set of practical and theoretical applications of the computability of partition functions and address the challenges that arise.
Read more about "Applications of Partition Functions"