Trees and Markov convexity

James R. Lee; Assaf Naor; Yuval Peres

doi:10.1145/1109557.1109671

Trees and Markov convexity

James R. Lee
, Assaf Naor
, Yuval Peres

Mathematics

Research output: Contribution to conference › Paper › peer-review

11 Scopus citations

Abstract

We give combinatorial, geometric, and probabilistic characterizations of the distortion of tree metrics into L_p spaces. This requires the development of new embedding techniques, as well as a method for proving distortion lower bounds which is based on the wandering of Markov chains in Banach spaces, and a new metric invariant we call Markov convexity. Trees are thus the first non-trivial class of metric spaces for which one can give a simple and complete characterization of their distortion into a Hubert space, up to universal constants. Our results also yield an efficient algorithm for constructing such embeddings.

Original language	English (US)
Pages	1028-1037
Number of pages	10
DOIs	https://doi.org/10.1145/1109557.1109671
State	Published - 2006
Event	Seventeenth Annual ACM-SIAM Symposium on Discrete Algorithms - Miami, FL, United States Duration: Jan 22 2006 → Jan 24 2006

Other

Other	Seventeenth Annual ACM-SIAM Symposium on Discrete Algorithms
Country/Territory	United States
City	Miami, FL
Period	1/22/06 → 1/24/06

All Science Journal Classification (ASJC) codes

Software
General Mathematics

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10.1145/1109557.1109671

Cite this

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title = "Trees and Markov convexity",

abstract = "We give combinatorial, geometric, and probabilistic characterizations of the distortion of tree metrics into Lp spaces. This requires the development of new embedding techniques, as well as a method for proving distortion lower bounds which is based on the wandering of Markov chains in Banach spaces, and a new metric invariant we call Markov convexity. Trees are thus the first non-trivial class of metric spaces for which one can give a simple and complete characterization of their distortion into a Hubert space, up to universal constants. Our results also yield an efficient algorithm for constructing such embeddings.",

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AU - Lee, James R.

AU - Naor, Assaf

AU - Peres, Yuval

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AB - We give combinatorial, geometric, and probabilistic characterizations of the distortion of tree metrics into Lp spaces. This requires the development of new embedding techniques, as well as a method for proving distortion lower bounds which is based on the wandering of Markov chains in Banach spaces, and a new metric invariant we call Markov convexity. Trees are thus the first non-trivial class of metric spaces for which one can give a simple and complete characterization of their distortion into a Hubert space, up to universal constants. Our results also yield an efficient algorithm for constructing such embeddings.

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T2 - Seventeenth Annual ACM-SIAM Symposium on Discrete Algorithms

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Trees and Markov convexity

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