𝔖 Bobbio Scriptorium
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Cutting disjoint disks by straight lines

✍ Scribed by N. Alon; M. Katchalski; W. R. Pulleyblank


Book ID
105489430
Publisher
Springer
Year
1989
Tongue
English
Weight
285 KB
Volume
4
Category
Article
ISSN
0179-5376

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Cut by a line the union of given disjoint disks in the plane so that both sides of the line contain many intact disks. At least how many intact disks can we leave in either side? It is proved that there is a family of infinitely many disjoint disks in the plane for which every line has a side that c

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✍ Hiroshi Maehara; Ai Oshiro πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 94 KB

Let F n denote a family of disjoint n balls in R d (d 2), and let \*=\*(F n ) denote the ratio (maximum radius)Γ‚(minimum radius) among the balls in F n . We prove that (1) there is a unit vector uÁ such that every line parallel to uÁ intersects at most O(-(1+log \*) n log n) balls of F n , and (2) t