COMPUTATIONAL GEOMETRY-THEORY AND APPLICATIONS
|
1999年
/
13卷
/
04期
关键词:
balanced partition;
point set;
plane;
D O I:
10.1016/S0925-7721(99)00024-3
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We prove the following theorem. Let m greater than or equal to 2 and q greater than or equal to 1 be integers and let S and T be two disjoint sets of points in the plane such that no three points of S boolean OR T are on the same line, /S/ = 2q and /T/ = mq. Then S boolean OR T can be partitioned into q disjoint subsets P-1, P-2,..., P-q satisfying the following two conditions: (i) conv(P-i) boolean AND conv(P-j) = phi for all 1 less than or equal to i < j less than or equal to q, where conv(P-i) denotes the convex hull of P-i; and (ii) /P-i boolean AND S/ = 2 and /P-i boolean AND T/ = m for all 1 less than or equal to i less than or equal to q. (C) 1999 Elsevier Science B.V. All rights reserved.