File:Helly's theorem.svg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:15, 28 July 2009 | ![]() | 872 × 333 (6 KB) | David Eppstein | {{Information |Description={{en|1=Helly's theorem: if a family of convex sets in d-dimensional Euclidean space has the property that every d+1 of them have a nonempty intersection, then the whole family has a nonempty intersection. |
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