What's Behind the Homotopical Decomposition of a Simplicial Complex

Explore the mathematics behind homotopical decomposition of simplicial complexes in this 48-minute lecture. Delve into the challenges of preserving homotopy type when decomposing a simplicial complex through vertex covering. Investigate sufficient conditions for homotopy type preservation, focusing on the study of homotopy fibres of certain functors and related comma categories. Learn about the Vietoris-Rips complex of metric spaces and the limitations of retrieving its homotopy type through subspace analysis. Examine the obstruction complex, collection p, main theorem, homotopic equivalence, and hypotheses related to decomposability results. Gain insights from the joint work of Francesca Tombari, Wojciech Chachólski, Alvin Jin, and Martina Scolamiero in this advanced applied algebraic topology presentation.