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B3

Part of 1962 Putnam

Problems(1)

Putnam 1962 B3

Source: Putnam 1962

5/21/2022
Let SS be a convex region in the euclidean plane containing the origin. Assume that every ray from the origin has at least one point outside SS. Prove that SS is bounded.
PutnamboundedConvex Setgeometrycollege contestsreal analysis