Abstract
We investigate the strict power concavity of the convolution of a function and the characteristic function of a convex body. Using the result, we show that every convex body has a unique illuminating center.
Similar content being viewed by others
References
Brascamp, H.J., Lieb, E.H.: On extensions of the Brunn-Minkowski and Prékopa-Leinlder theorems, including inequalities for log concave functions, and with an application to the diffusion equation. J. Funct. Anal. 22, 366–389 (1976)
Dancs, S., Uhrin, B.: On a class of integral inequalities and their measure-theoretic consequences. J. Math. Anal. Appl. 74, 388–400 (1980)
Gardner, R.J.: The Brunn-Minkowski inequality. Bull. Am. Math. Soc. 39(3), 355–405 (2002)
Ishige, K., Salani, P.: A note on parabolic power concavity. Kodai Math. J. 37(3), 668–679 (2014)
Kennington, A.U.: Power concavity and boundary value problems. Indiana Univ. Math. J. 34, 687–704 (1985)
Leindler, L.: On a certain converse of Hölder’s inequality II. Acta Sci. Math. (Szeged) 33, 217–223 (1972)
Prékopa, A.: Logarithmic concave measures with application to stochastic programming. Acta Sci. Math. (Szeged) 32, 301–315 (1971)
Prékopa, A.: On logarithmic concave measures and functions. Acta Sci. Math. (Szeged) 34, 335–343 (1975)
Sakata, S.: Movement of centers with respect to various potentials. Trans. Am. Math. Soc. 367, 8347–8381 (2015)
Sakata, S.: Geometric estimation of a potential and cone conditions of a body (2016, preprint). arXiv:1603.02937
Shibata, K.: Where should a streetlight be placed in a triangle-shaped park? Elementary integro-differential geometric optics. (2010, preprint). Available at: http://www1.rsp.fukuoka-u.ac.jp/kototoi/igi-ari-4_E3.pdf
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sakata, S. Every convex body has a unique illuminating center. J. Geom. 108, 655–662 (2017). https://doi.org/10.1007/s00022-016-0365-8
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00022-016-0365-8