Invariant illumination of convex bodies
For a convex body \(K\subseteq \mathbb{R}^d\) let \(L^*(K)\) denote the minimum number of directions illuminating the boundaries of all congruent copies of \(K\). Author gives upper bounds for \(L^*(K)\) in case \(K\) being of constant width.
scientific article; zbMATH DE number 928004