A cube Slice that is not a Zonoid

Abstract

Let $Q$ be the unit cube in $\mathbb{R}^n$ and $H$ a hyperplane thru the Origin. The intersection $H\cap Q$is called (central) Cube slice and was investigated by Henesley, Vaaler, Ball and others. A zonoid is the range of a measure into $R^n$. Our interest is : When is a cube slice a zonoid? We only give an example of a cube slice in $\mathbb{R}^4$ that is not a zonoid. We also give examples ofslices that are zonoids. For ex let H: $ax + y +z + t =0$h If $ a\ge 3$ then the slice is a zonoid( zonotope) Otherwise it isnot ,