Invisibility in billiards is impossible in an infinite number of directions
classification
🧮 math.DS
keywords
billiarddirectionsinvisibilitynumberbilliardsbodyconsidereuclidean
read the original abstract
We consider the billiard in the exterior of a piecewise smooth body in two-dimensional Euclidean space and show that the maximum number of directions of invisibility in such billiard is at most finite.
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