MathDB
Miklos Schweitzer 1966_1

Source:

September 29, 2008
floor functionadvanced fieldsadvanced fields unsolved

Problem Statement

Show that a segment of length h h can go through or be tangent to at most 2\lfloor h/\sqrt{2}\rfloor\plus{}2 nonoverlapping unit spheres. L.Fejes-Toth, A. Heppes