f-Divergence for convex bodies
@article{Werner2012fDivergenceFC, title={f-Divergence for convex bodies}, author={Elisabeth M. Werner}, journal={ArXiv}, year={2012}, volume={abs/1205.3423} }
We introduce f-divergence, a concept from information theory and statistics, for convex bodies in ℝ n . We prove that f-divergences are SL(n) invariant valuations and we establish an affine isoperimetric inequality for these quantities. We show that generalized affine surface area and in particular the L p affine surface area from the L p Brunn Minkowski theory are special cases of f-divergences.
16 Citations
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References
SHOWING 1-10 OF 58 REFERENCES
Relative entropy of cone measures and Lp centroid bodies
- Mathematics
- 2012
Let K be a convex body in ℝn. We introduce a new affine invariant, which we call ΩK, that can be found in three different ways: as a limit of normalized Lp‐affine surface areas; as the relative…
Inequalities for mixed p-affine surface area
- Mathematics
- 2010
We prove new Alexandrov-Fenchel type inequalities and new affine isoperimetric inequalities for mixed p-affine surface areas. We introduce a new class of bodies, the illumination surface bodies, and…
On the p-Affine Surface Area
- Mathematics
- 1997
We give geometric interpretations of certain affine invariants of convex bodies. The affine invariants are the p-affine surface areas introduced by Lutwak. The geometric interpretations involve…
Relative entropies for convex bodies
- Mathematics
- 2011
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,…
Convolutions, Transforms, and Convex Bodies
- Mathematics
- 1999
The paper studies convex bodies and star bodies in Rn by using Radon transforms on Grassmann manifolds, p‐cosine transforms on the unit sphere, and convolutions on the rotation group of Rn. It…
Sharp Affine LP Sobolev Inequalities
- Mathematics
- 2002
A sharp affine Lp Sobolev inequality for functions on Euclidean n-space is established. This new inequality is significantly stronger than (and directly implies) the classical sharp Lp Sobolev…
The Discrete Planar L 0-Minkowski Problem
- Mathematics
- 2014
In the discrete setting, the L0-Minkowski problem extends the question posed and answered by the classical Minkowski’s existence theorem for polytopes. In particular, the planar extension, which we…