Does there exist a set M ? (IMO SL 1987-P9)
Source:
August 19, 2010
algebrapolynomialanalytic geometryIntersection3D geometryIMO Shortlist
Problem Statement
Does there exist a set in usual Euclidean space such that for every plane the intersection is finite and nonempty ?Proposed by Hungary.[hide="Remark"]I'm not sure I'm posting this in a right Forum.