Mathematics – Metric Geometry
Scientific paper
1998-04-07
Mathematics
Metric Geometry
11 pages, 11 figures. Dedicated to our friend Imre B\'ar\'any on the occasion of his 50th birthday
Scientific paper
For any delta > 1 we construct a periodic and locally finite packing of the
plane with ellipses whose delta-enlargement covers the whole plane. This
answers a question of Imre B\'ar\'any. On the other hand, we show that if C is
a packing in the plane with circular discs of radius at most 1, then its
1.00001-enlargement covers no square with side length 4.
Kuperberg Krystyna
Kuperberg Włodzimierz
Matoušek Jiří
Valtr Pavel
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