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Applied CATS Seminar, Spring 2026

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

 Binary classification with star-shaped polyhedral sets 3418
05/05

Sofía Errázuriz Muñoz
KTH

 Sigle-view Rolling Shutter SfM (or how to use distortions to our advantage) 3418
12/05 Wojciech Chachólski
KTH		 Chain modularity 3418
19/05 Yacoub Hendi
Uppsala University		 The Geometry of Polynomial Group Convolutional Neural Networks 3418
28/05
Thursday at 15.15!
(Note the room change)

Rocío Gonzalez Diaz
University of Sevilla

Morten Brun
University of Bergen

 Fuzzy Simplicial Homology: A Step Towards Fuzzy Topological Data Analysis



Computing Subdivision Bifiltrations 		3721
01/06
Monday at 9.15!
(Note the room change)		 Ulrich Bauer
TU Munich		 A metrically complete and Krull-Schmidt space of multiparameter persistence modules 3721
09/06 No seminar - 3418
16/06 Jose Israel Rodriguez
University of Wisconsin		 The Euclidean distance degree of one-parameter anchored multiview varieties 3418
See you after the summer!

Previous terms:

​​​​​​​Autumn 2025 ​​​​​​​