3 papers
math.CT2026
Classifying Infinity Topoi via Weighted Limits
Ivan Di Liberti, Nicholas Meadows
We construct classifying -topoi by showing that the -category of topoi has weighted limits. We show that several prestacks of interest have a classifying topos,…
cs.LG2025
Persistent reachability homology in machine learning applications
Luigi Caputi, Nicholas Meadows, Henri Riihimäki
We explore the recently introduced persistent reachability homology (PRH) of digraph data, i.e. data in the form of directed graphs. In particular, we study the effectiveness of PR…
math.LO2025
Definable Obstruction Theory
Nicholas Meadows
A series of recent papers by Bergfalk, Lupini and Panagiotopoulus developed the foundations of a field known as `definable algebraic topology,' in which classical cohomological inv…