,
Nir Petruschka
Creative Commons Attribution 4.0 International license
Lipschitz decomposition is a useful tool in the design of efficient algorithms involving metric spaces. While many bounds are known for different families of finite metrics, the optimal parameters for n-point subsets of 𝓁_p, for p > 2, remained open, see e.g. [Naor, SODA 2017]. We make significant progress on this question and establish the bound β = O(log^{1-1/p} n). Building on prior work, we demonstrate applications of this result to two problems, high-dimensional geometric spanners and distance labeling schemes. In addition, we sharpen a related decomposition bound for 1 < p < 2, due to Filtser and Neiman [Algorithmica 2022].
@InProceedings{krauthgamer_et_al:LIPIcs.SoCG.2025.66,
author = {Krauthgamer, Robert and Petruschka, Nir},
title = {{Lipschitz Decompositions of Finite 𝓁\underline\{p\} Metrics}},
booktitle = {41st International Symposium on Computational Geometry (SoCG 2025)},
pages = {66:1--66:14},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-370-6},
ISSN = {1868-8969},
year = {2025},
volume = {332},
editor = {Aichholzer, Oswin and Wang, Haitao},
publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.SoCG.2025.66},
URN = {urn:nbn:de:0030-drops-232182},
doi = {10.4230/LIPIcs.SoCG.2025.66},
annote = {Keywords: Lipschitz decompositions, metric embeddings, geometric spanners}
}