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Search: MSC category 52A38 ( Length, area, volume [See also 26B15, 28A75, 49Q20] )

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1. CMB 2009 (vol 52 pp. 464)

Stancu, Alina
 Two Volume Product Inequalities and Their Applications Let $K \subset {\mathbb{R}}^{n+1}$ be a convex body of class $C^2$ with everywhere positive Gauss curvature. We show that there exists a positive number $\delta (K)$ such that for any $\delta \in (0, \delta(K))$ we have $\Volu(K_{\delta})\cdot \Volu((K_{\delta})^{\sstar}) \geq \Volu(K)\cdot \Volu(K^{\sstar}) \geq \Volu(K^{\delta})\cdot \Volu((K^{\delta})^{\sstar})$, where $K_{\delta}$, $K^{\delta}$ and $K^{\sstar}$ stand for the convex floating body, the illumination body, and the polar of $K$, respectively. We derive a few consequences of these inequalities. Keywords:affine invariants, convex floating bodies, illumination bodiesCategories:52A40, 52A38, 52A20

2. CMB 1999 (vol 42 pp. 237)

Thompson, A. C.
 On Benson's Definition of Area in Minkowski Space Let $(X, \norm)$ be a Minkowski space (finite dimensional Banach space) with unit ball $B$. Various definitions of surface area are possible in $X$. Here we explore the one given by Benson \cite{ben1}, \cite{ben2}. In particular, we show that this definition is convex and give details about the nature of the solution to the isoperimetric problem. Categories:52A21, 52A38
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