# Past events

Events at the Centre for Symmetry and Deformation.

**Search for certain years in the panel below.**

### Department Christmas colloquium - Eero Saksman

### Algebra/Topology seminar

Title: An equivariant Segal conjecture

### What is... an operad?

### Algebra/Topology Seminar

Speaker: Sam Payne (University of Texas at Austin)

Title: Tropical curves, graph homology, and top weight cohomology of M_g

### Algebra/Topology Seminar: On the E-theory of Configuration Spaces

### Richard Kadison and his mathematical legacy - A memorial conference

### Algebra/Topology Seminar

Speaker: Mingcong Zeng (Utrecht University)

### Algebra/Topology Seminar

Speaker: Travis Schedler (Imperial College, London)

### Algebra/Topology Seminar

Speaker: Benjamin Hennion (University Paris Sud (Paris 11 -- Orsay))

### Number Theory Seminar

### Algebra/Topology Seminar

Speaker: Marc Hoyois

Title: Towards higher algebraic cobordism.

### Number Theory Seminar

### UNF_LinAlg

### Algebra/Topology Seminar

Tomáš Zeman (Stockholm University)

### What is... the ring of symmetric functions?

### Algebra/Topology Seminar

Speaker: Sune Precht Reeh (Copenhagen)

Title: Transfer for free loop spaces and covering maps

### Algebra/Topology seminar

### Algebra/Topology Seminar

Bernardo Villarreal (University of Copenhagen)

Title: The complex of affinely commutative sets

### OA/GAMP seminar by Hermann Schulz-Baldes (U Erlangen-Nuernberg)

**Title:**Flat bands of surface states via index theory of Toeplitz operators with Besov symbols.

### GAMP seminar by Zeno Huang (CUNY)

**Title:**Mean curvature flows of closed hypersurfaces in a class of warped product manifolds

### GAMP seminar by Robin Reuvers (U Cambridge)

**Title:**Generalized Pauli constraints in large systems: the Pauli principle

dominates

### Algebra/Topology Seminar

Speaker: Muriel Livernet (Paris Diderot)

Title: Model category structures for multicomplexes

Abstract:

Multicomplexes can be seen as deformations of chain complexes and we will present a nested family of weak-equivalences for multicomplexes, arising from the spectral sequence associated to multicomplexes. We will then show that there is a model category structure associated to this family of weak equivalences. The talk is "self-contained" and all notions will be motivated and defined.