
By examining an example constructed by Petty and McKinney, we show that there are pairs of centered and coaxial bodies of revolution in E d , d ≥ 3 {\mathbb {E}^d}, d \geq 3 , whose projections onto each two-dimensional subspace are similar, but which are not themselves even affinely equivalent.
direct homothety, projection, affine equivalence, Convex sets in \(n\) dimensions (including convex hypersurfaces), section, similarity, convex body
direct homothety, projection, affine equivalence, Convex sets in \(n\) dimensions (including convex hypersurfaces), section, similarity, convex body
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