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We consider the entropy of sums of independent discrete random variables, in analogy with Shannon's Entropy Power Inequality, where equality holds for normals. In our case, infinite divisibility suggests that equality should hold for…

信息论 · 计算机科学 2010-10-21 Oliver Johnson , Yaming Yu

Shannon entropy for discrete distributions is a fundamental and widely used concept, but its continuous analogue, known as differential entropy, lacks essential properties such as positivity and compatibility with the discrete case. In this…

概率论 · 数学 2025-08-07 Yuliya Mishura , Kostiantyn Ralchenko

We show that there is equality in Shannon's Entropy Power Inequality (EPI) if and only if the random variables involved are Gaussian, assuming nothing beyond the existence of differential entropies. This is done by justifying de Bruijn's…

概率论 · 数学 2025-09-30 Lampros Gavalakis , Ioannis Kontoyiannis

Upper and lower bounds are obtained for the joint entropy of a collection of random variables in terms of an arbitrary collection of subset joint entropies. These inequalities generalize Shannon's chain rule for entropy as well as…

信息论 · 计算机科学 2024-05-07 Mokshay Madiman , Prasad Tetali

We investigate quantum R\'enyi entropic quantities, specifically those derived from 'sandwiched' divergence. This divergence is one of several proposed R\'enyi generalisations of the quantum relative entropy. We may define R\'enyi…

量子物理 · 物理学 2021-10-04 Alexander McKinlay

Various lower bounds are established for the entropy of sums, products and their combinations. First, we derive a prime-field analogue of a version of the entropy power inequality established by Tao over torsion-free groups. Next, we prove…

组合数学 · 数学 2026-04-30 Lampros Gavalakis , Marcel K. Goh , Ioannis Kontoyiannis

We have presented a new axiomatic derivation of Shannon Entropy for a discrete probability distribution on the basis of the postulates of additivity and concavity of the entropy function.We have then modified shannon entropy to take account…

量子物理 · 物理学 2007-05-23 C. G. Chakrabarti , Indranil Chakrabarty

We exhibit infinitely many new, constrained inequalities for the von Neumann entropy, and show that they are independent of each other and the known inequalities obeyed by the von Neumann entropy (basically strong subadditivity). The new…

量子物理 · 物理学 2012-10-30 Josh Cadney , Noah Linden , Andreas Winter

The aim of the paper is to study the link between non additivity of some entropies and their boundedness. We propose an axiomatic construction of the entropy relying on the fact that entropy belongs to a group isomorphic to the usual…

统计力学 · 物理学 2009-11-11 Pierre-Olivier Amblard , Christophe Vignat

A marginal problem asks whether a given family of marginal distributions for some set of random variables arises from some joint distribution of these variables. Here we point out that the existence of such a joint distribution imposes…

信息论 · 计算机科学 2013-01-25 Tobias Fritz , Rafael Chaves

We derive an inequality for the linear entropy, that gives sharp bounds for all finite dimensional systems. The derivation is based on generalised Bloch decompositions and provides a strict improvement for the possible distribution of…

量子物理 · 物理学 2019-10-18 Simon Morelli , Claude Klöckl , Christopher Eltschka , Jens Siewert , Marcus Huber

Following a growing number of studies that, over the past 15 years, have established entropy inequalities via ideas and tools from additive combinatorics, in this work we obtain a number of new bounds for the differential entropy of sums,…

信息论 · 计算机科学 2025-11-20 Rupert Li , Lampros Gavalakis , Ioannis Kontoyiannis

We establish a discrete analog of the R\'enyi entropy comparison due to Bobkov and Madiman. For log-concave variables on the integers, the min entropy is within log e of the usual Shannon entropy. Additionally we investigate the entropic…

概率论 · 数学 2021-06-01 James Melbourne , Tomasz Tkocz

Shannon's Entropy Power Inequality can be viewed as characterizing the minimum differential entropy achievable by the sum of two independent random variables with fixed differential entropies. The entropy power inequality has played a key…

信息论 · 计算机科学 2012-07-31 Varun Jog , Venkat Anantharam

A number of inequalities for the weighted entropies is proposed, mirroring properties of a standard (Shannon) entropy and related quantities.

信息论 · 计算机科学 2015-10-12 Yuri Suhov , Salimeh Yasaei Sekeh

Convergence properties of Shannon Entropy are studied. In the differential setting, it is shown that weak convergence of probability measures, or convergence in distribution, is not enough for convergence of the associated differential…

信息论 · 计算机科学 2016-11-18 Francisco J. Piera , Patricio Parada

For any Bell locality scenario (or Kochen-Specker noncontextuality scenario), the joint Shannon entropies of local (or noncontextual) models define a convex cone for which the non-trivial facets are tight entropic Bell (or contextuality)…

量子物理 · 物理学 2012-03-15 Rafael Chaves , Tobias Fritz

In the past over two decades, very fruitful results have been obtained in information theory in the study of the Shannon entropy. This study has led to the discovery of a new class of constraints on the Shannon entropy called…

信息论 · 计算机科学 2025-03-07 Raymond W. Yeung

Reliable data-driven estimation of Shannon entropy from small data sets, where the number of examples is potentially smaller than the number of possible outcomes, is a critical matter in several applications. In this paper, we introduce a…

机器学习 · 计算机科学 2025-12-12 Gabriel F. A. Bastos , Jugurta Montalvão

In this note, the following basic question is explored: in a cyclic group, how are the Shannon entropies of the sum and difference of i.i.d. random variables related to each other? For the integer group, we show that they can differ by any…

信息论 · 计算机科学 2018-05-09 Emmanuel Abbe , Jiange Li , Mokshay Madiman
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