Algebraic stability of zigzag persistence modules

Botnan, Magnus¹ ; Lesnick, Michael²

¹ Zentrum Mathematik, Technische Universität München, Garching bei München, Germany
² Princeton Neuroscience Institute, Princeton University, Princeton, NJ, United States

Algebraic and Geometric Topology, Tome 18 (2018) no. 6, pp. 3133-3204

Résumé

The stability theorem for persistent homology is a central result in topological data analysis. While the original formulation of the result concerns the persistence barcodes of ℝ–valued functions, the result was later cast in a more general algebraic form, in the language of persistence modules and interleavings. We establish an analogue of this algebraic stability theorem for zigzag persistence modules. To do so, we functorially extend each zigzag persistence module to a two-dimensional persistence module, and establish an algebraic stability theorem for these extensions. One part of our argument yields a stability result for free two-dimensional persistence modules. As an application of our main theorem, we strengthen a result of Bauer et al on the stability of the persistent homology of Reeb graphs. Our main result also yields an alternative proof of the stability theorem for level set persistent homology of Carlsson et al.

Détail

DOI : 10.2140/agt.2018.18.3133

Classification : 55N35, 55U99
Keywords: topological data analysis, persistent homology, interleavings