Article (Scientific journals)
GEOMETRIC BOUNDS FOR PERSISTENCE
BALITSKIY, Alexey; Coskunuzer, Baris; Mémoli, Facundo
2025In Transactions of the American Mathematical Society
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Abstract :
[en] In this paper, we offer a new perspective on persistent homology by integrating key concepts from metric geometry. For a given compact subset X of a Banach space Y, we analyze the topological features arising in the family of nested neighborhoods of X in Y and provide several geometric bounds on their persistence (lifespans). We begin by examining the lifespans of these homology classes in terms of their filling radii in Y, establishing connections between these lifespans and fundamental invariants in metric geometry, such as the Urysohn width. We then derive bounds on these lifespans by considering the l^\infinity-principal components of X, also known as Kolmogorov widths. Additionally, we introduce and investigate the concept of extinction time of a metric space X: the critical threshold beyond which no homological features persist in any degree. We propose methods for estimating the Čech and Vietoris-Rips extinction times of X by relating X to its convex hull and to its tight span, respectively.
Disciplines :
Mathematics
Author, co-author :
BALITSKIY, Alexey  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Mathematics (DMATH)
Coskunuzer, Baris
Mémoli, Facundo
External co-authors :
yes
Language :
English
Title :
GEOMETRIC BOUNDS FOR PERSISTENCE
Publication date :
2025
Journal title :
Transactions of the American Mathematical Society
ISSN :
0002-9947
eISSN :
1088-6850
Publisher :
American Mathematical Society (AMS)
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
National Science Foundation
H2020 Marie Skłodowska-Curie Actions
Available on ORBilu :
since 15 October 2025

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