Exact Contraction Coefficient of Jensen–Shannon Divergence for m-ary Symmetric Channels

Zenodo (CERN European Organization for Nuclear Research) 2026 Preprint Open access

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Authors: Alex B. Shvets
DOI: 10.5281/zenodo.18050987
Cited by: 0

Abstract

We derive an exact closed-form expression for the Jensen–Shannon divergence contraction coefficient of m-ary symmetric channels and show its equality with the χ² contraction coefficient, using a local-to-global and metric-transport analysis.

Fields of Study & Subjects

Wireless Communication Security Techniques Statistical Mechanics and Entropy Mathematical Inequalities and Applications

Publication details

Journal / source
Zenodo (CERN European Organization for Nuclear Research)
Publication date
14 January 2026
Language
EN
Document type
Preprint