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arXiv 1105.2846math.FA
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凸体的相对熵

Relative entropies for convex bodies

Justin Jenkinson, Elisabeth Werner

摘要:

我们介绍了一类新的(不一定是凸的)机构,并显示,除其他事项外,这些机构提供了另一个凸几何分析和信息论之间的联系。也就是说,它们给出了凸体的锥测度的相对熵及其极量和相关量的几何解释。这种解释首先由保里斯和维尔纳在$L_p$-质心体的背景下对对称凸体给出。在那里,相对熵在对某些表达式进行二阶展开后出现。现在,不需要对称性假设。此外,使用新的身体,已经一阶展开使相对熵出现。因此,这些物体比$L_p$-质心物体"更快"地检测凸体边界的细节。

英文摘要:

We introduce a new class of (not necessarily convex) bodies and show, among other things, that these bodies provide yet another link between convex geometric analysis and information theory. Namely, they give geometric interpretations of the relative entropy of the cone measures of a convex body and its polar and related quantities. Such interpretations were first given by Paouris and Werner for symmetric convex bodies in the context of the $L_p$-centroid bodies. There, the relative entropies appear after performing second order expansions of certain expressions. Now, no symmetry assumptions are needed. Moreover, using the new bodies, already first order expansions make the relative entropies appear. Thus, these bodies detect "faster" details of the boundary of a convex body than the $L_p$-centroid bodies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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