Abstract
For a permutationally invariant unconditional convex body \(K\) in \({\mathbb{R}}^{n}\) we define a finite sequence \({({K}_{j})}_{j=1}^{n}\) of projections of the body K to the space spanned by first j vectors of the standard basis of \({\mathbb{R}}^{n}\). We prove that the sequence of volumes \({(\vert {K}_{j}\vert )}_{j=1}^{n}\) is log-concave.
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Acknowledgements
The authors would like to thank Prof. K. Oleszkiewicz for a valuable comment regarding the equality conditions in Theorem 1 as well as Prof. R. Latała for a stimulating discussion. Research of the First named author partially supported by NCN Grant no. 2011/01/N/ST1/01839. Research of the second named author partially supported by NCN Grant no. 2011/01/N/ST1/05960.
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Nayar, P., Tkocz, T. (2012). On a Loomis–Whitney Type Inequality for Permutationally Invariant Unconditional Convex Bodies. In: Klartag, B., Mendelson, S., Milman, V. (eds) Geometric Aspects of Functional Analysis. Lecture Notes in Mathematics, vol 2050. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29849-3_19
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DOI: https://doi.org/10.1007/978-3-642-29849-3_19
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