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On the spherical projections of convex bodies Myroshnychenko, Sergii

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We discuss some properties of spherical projections, and consider the related question regarding their congruency for two convex bodies. In particular, let $P$ and $Q$ be two convex polytopes both contained in the interior of an Euclidean ball $r\textbf{B}^{d}$. We prove that $P=Q$ provided that their spherical projections from any point on the sphere $rS^{d-1}$ are congruent. We also prove an analogous result for a pair of Euclidean balls.

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Attribution-NonCommercial-NoDerivatives 4.0 International