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Angle orders, regularn-gon orders and the crossing number

✍ Scribed by Nicola Santoro; Jorge Urrutia


Publisher
Springer Netherlands
Year
1987
Tongue
English
Weight
674 KB
Volume
4
Category
Article
ISSN
0167-8094

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Let d!= {P, , . . . . P,} be a family of sets. A partial order P(@, <) on CD is naturally defined by the condition P, < 5 iff P, is contained in 4. When the elements of Cg are disks (i.e. circles together with their interiors), P(@, <) is called a circle order; if the elements of Cg are n-polygons,

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