Abstract
As was shown recently by the authors, the entropy power inequality can be reversed for independent summands with sufficiently concave densities, when the distributions of the summands are put in a special position. In this note it is proved that reversibility is impossible over the whole class of convex probability distributions. Related phenomena for identically distributed summands are also discussed.
2010 Mathematics Subject Classification. 60F05.
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References
S. Artstein-Avidan, V. Milman, Y. Ostrover, The M-ellipsoid, symplectic capacities and volume. Comment. Math. Helv. 83(2), 359–369 (2008)
S. Bobkov, M. Madiman, Dimensional behaviour of entropy and information. C. R. Acad. Sci. Paris Sér. I Math. 349, 201–204 (2011)
S. Bobkov, M. Madiman, Reverse Brunn-Minkowski and reverse entropy power inequalities for convex measures. J. Funct. Anal. 262(7), 3309–3339 (2012)
S. Bobkov, M. Madiman, The entropy per coordinate of a random vector is highly constrained under convexity conditions. IEEE Trans. Inform. Theor. 57(8), 4940–4954 (2011)
S.G. Bobkov, Large deviations and isoperimetry over convex probability measures. Electron. J. Probab. 12, 1072–1100 (2007)
S.G. Bobkov, On Milman’s ellipsoids and M-position of convex bodies, in Concentration, Functional Inequalities and Isoperimetry. Contemporary Mathematics, vol. 545 (American Mathematical Society, Providence, 2011), pp. 23–34
S.G. Bobkov, G.P. Chistyakov, F. Götze, Entropic instability of Cramer’s characterization of the normal law, in Selected Works of Willem van Zwet. Sel. Works Probab. Stat. (Springer, New York, 2012), pp. 231–242 (2012)
S.G. Bobkov, G.P. Chistyakov, F. Götze, Stability problems in Cramér-type characterization in case of i.i.d. summands. Teor. Veroyatnost. i Primenen. 57(4), 701–723 (2011)
C. Borell, Complements of Lyapunov’s inequality. Math. Ann. 205, 323–331 (1973)
C. Borell, Convex measures on locally convex spaces. Ark. Math. 12, 239–252 (1974)
C. Borell, Convex set functions in d-space. Period. Math. Hungar. 6(2), 111–136 (1975)
J. Bourgain, B. Klartag, V.D. Milman, Symmetrization and isotropic constants of convex bodies, in Geometric Aspects of Functional Analysis (1986/87). Lecture Notes in Mathematics, vol. 1850 (Springer, Berlin, 2004), pp. 101–115
H.J. Brascamp, E.H. Lieb, On extensions of the Brunn-Minkowski and Prékopa-Leindler theorems, including inequalities for log concave functions, and with an application to the diffusion equation. J. Funct. Anal. 22(4), 366–389 (1976)
M. Costa, T.M. Cover, On the similarity of the entropy power inequality and the Brunn-Minkowski inequality. IEEE Trans. Inform. Theor. IT-30, 837–839 (1984)
A. Dembo, T. Cover, J. Thomas, Information-theoretic inequalities. IEEE Trans. Inform. Theor. 37(6), 1501–1518 (1991)
B. Klartag, V.D. Milman, Geometry of log-concave functions and measures. Geom. Dedicata 112, 169–182 (2005)
H. Koenig, N. Tomczak-Jaegermann, Geometric inequalities for a class of exponential measures. Proc. Am. Math. Soc. 133(4), 1213–1221 (2005)
M. Madiman, I. Kontoyiannis, The Ruzsa divergence for random elements in locally compact abelian groups. Preprint (2013)
M. Madiman, On the entropy of sums, in Proceedings of the IEEE Information Theory Workshop, Porto, Portugal (IEEE, New York, 2008)
H.P. McKean Jr., Speed of approach to equilibrium for Kac’s caricature of a Maxwellian gas. Arch. Rational Mech. Anal. 21, 343–367 (1966)
V.D. Milman, An inverse form of the Brunn-Minkowski inequality, with applications to the local theory of normed spaces. C. R. Acad. Sci. Paris Sér. I Math. 302(1), 25–28 (1986)
V.D. Milman, Entropy point of view on some geometric inequalities. C. R. Acad. Sci. Paris Sér. I Math. 306(14), 611–615 (1988)
V.D. Milman, Isomorphic symmetrizations and geometric inequalities, in Geometric Aspects of Functional Analysis (1986/87). Lecture Notes in Mathematics, vol. 1317 (Springer, Berlin, 1988), pp. 107–131
G. Pisier, The Volume of Convex Bodies and Banach Space Geometry. Cambridge Tracts in Mathematics, vol. 94 (Cambridge University Press, Cambridge, 1989)
A. Prékopa, Logarithmic concave measures with applications to stochastic programming. Acta Sci. Math. Szeged 32, 301–316 (1971)
C.A. Rogers, G.C. Shephard, The difference body of a convex body. Arch. Math. (Basel) 8, 220–233 (1957)
C.E. Shannon, A mathematical theory of communication. Bell System Tech. J. 27, 379–423, 623–656 (1948)
A.J. Stam, Some inequalities satisfied by the quantities of information of Fisher and Shannon. Inform. Contr. 2, 101–112 (1959)
S. Szarek, D. Voiculescu, Shannon’s entropy power inequality via restricted Minkowski sums, in Geometric Aspects of Functional Analysis. Lecture Notes in Mathematics, vol. 1745 (Springer, Berlin, 2000), pp. 257–262
Acknowledgements
Sergey G. Bobkov was supported in part by the NSF grant DMS-1106530. Mokshay M. Madiman was supported in part by the NSF CAREER grant DMS-1056996.
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Dedicated to Friedrich Götze on the occasion of his sixtieth birthday
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Bobkov, S.G., Madiman, M.M. (2013). On the Problem of Reversibility of the Entropy Power Inequality. In: Eichelsbacher, P., Elsner, G., Kösters, H., Löwe, M., Merkl, F., Rolles, S. (eds) Limit Theorems in Probability, Statistics and Number Theory. Springer Proceedings in Mathematics & Statistics, vol 42. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-36068-8_4
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