On Extensions of the Brunn-Minkowski and Prékopa-Leindler Theorems, Including Inequalities for Log Concave Functions, and with an Application to the Diffusion Equation

Herm Jan Brascamp and Elliott H. Lieb
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Herm Jan Brascamp: Princeton University, Department of Physics
Elliott H. Lieb: Princeton University, Department of Mathematics and Physics

A chapter in Inequalities, 2002, pp 441-464 from Springer

Abstract: Abstract We extend the Prékopa-Leindler theorem to other types of convex combinations of two positive functions and we strengthen the Prékopa—Leindler and Brunn-Minkowski theorems by introducing the notion of essential addition. Our proof of the Prékopa—Leindler theorem is simpler than the original one. We sharpen the inequality that the marginal of a log concave function is log concave, and we prove various moment inequalities for such functions. Finally, we use these results to derive inequalities for the fundamental solution of the diffusion equation with a convex potential.

Keywords: Diffusion Equation; Fundamental Solution; Moment Inequality; Nonnegative Measurable Function; Convex Potential (search for similar items in EconPapers)
Date: 2002
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-55925-9_36

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DOI: 10.1007/978-3-642-55925-9_36

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