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Questions
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What is the smallest diameter ring a non-convex polyhedron can pass through in 3-space?

dec 1 11 at 2:40 Joseph O'Rourke 44.1k●1●50●216

 
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When does every point in the volume of a polytope lie along a chord between its edges?

jan 17 12 at 16:16 Valeriu 21●1

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Recoving an unknown tree graph with knowledge of root node to leaf node distances

oct 10 11 at 11:05 Stefan Geschke 10.6k●1●15●37

 
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Threading pinholes in the wall of cylinder to pass through an internal coordinate

oct 31 11 at 6:35 UltraBlue06 209●2●6

 
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Is it possible to reliably generate a particular approximation of an ideal knot via a simulated annealing approach?

jul 30 at 19:38 Jason Cantarella 393●7