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Applied CATS Seminar

The Applied CATS Seminar focuses on applications of Combinatorics, Algebra, Topology, and Statistics, and is held at KTH.

Seminar talks take place on Tuesdays at 10:15 am (45–50 minutes plus questions). Talks are also streamed on Zoom via this link . Any changes to the schedule will be updated in this table and on the Calendar .

Organizers: Kim Lukas Kiehn  and Francesca Tombari .

Spring 2026 

Date Speaker Title Room
13/01 Henri Riihimäki
NORDITA		 Avalanche complex and topology of the sandpile dynamics on digraphs 3418
20/01 Giacomo Maletto
KTH		 Hilbert’s 16th problem for arrangements of a quartic curve and three lines 3418
27/01 Anda Skeja
Uppsala University		 Exact Computational Thresholds for Testing Between Planted Models 3418
03/02 Mireille Boutin
TU Eindhoven		 On solving polynomial equations with noisy coefficients: A case-study of the global position equations 3418
05/02 Dan Edidin
University of Missouri		 The beltway problem for the orthogonal group 3721
10/02

Francesca Tombari
KTH

 Stratified Morse theory for cell complexes 3418
17/02 Hassan Bozorgmanesh
University of Oulu		 Sparse Resultant‑Based Minimal Solvers Using Null Spaces 3418
24/02

Wouter Jongeneel
KTH

 Homotopy questions and stability of dynamical systems 3418
03/03

Jiayi Li
MPI-CBG Dresden

 Grokking as a Phase Transition Between Competing Basins, a Singular Learning Theory Perspective 3418
10/03 Björn Wehlin
KTH

Fast and easy-to-use TDA computations for criminology and beyond

3418
17/03 Soon Hoe Lim
KTH		 On the Potential and Pitfalls of Flow Matching for Probabilistic Forecasting 3418
24/03 Marco Nurisso
Politecnico di Torino		 Conservation Laws, Connectivity, and Singularities in the Learning Space of ReLU Networks 3418
31/03 Easter Break - 3418
07/04 Easter Break - 3418
14/04 Kelly Maggs
MPI-CBG Dresden

Persistent minimal models in rational homotopy theory

3418
21/04 Justus Sagemüller
KTH		 Representing Continuous Functions with Lazy Infinite Data Structures – Dos and Don'ts 3418
28/04

Katharina Jochemko
KTH

 - 3418
05/05

Sofía Errazuriz
KTH

 - 3418
12/05 Wojciech Chachólski
KTH		 - 3418
19/05 - - 3418
26/05 - - 3418
02/06 - - 3418
09/06 - - 3418
16/06 - - 3418
23/06 - - 3418
30/06 - - 3418

Previous terms:

Fall 2025