Sign up or sign in

Topology and Computing

Computing Session #4 #1

Subevent of Computing Session #4

Central Time (US & Canada)

Starts at: 2025-08-13 08:30AM

Ends at: 2025-08-13 08:55AM

Facets in the Vietoris--Rips complexes of hypercubes

Ziqin Feng ⟨zzf0006@auburn.edu⟩

Abstract:

In this talk, we’ll discuss the facets (maximal simplices) of the Vietoris–Rips complex VR(Qn;r) where Qn denotes the n-dimensional hypercube. We are particularly interested in those facets which are somehow independent of the dimension n. Using Hadamard matrices, we prove that the number of different dimensions of such facets is a super-polynomial function of the scale r, assuming that n is sufficiently large. We show also that the (2r1)-th dimensional homology of the complex VR(Qn;r) is non-trivial when n is large enough, provided that the Hadamard matrix of order 2r exists.

Back to events