10995 search results - page 214 / 2199 » Positioning |
165
click to vote
EJC
2008
15 years 6 months ago
2008
Given the set [n] = {1, . . . , n} for positive integer n, combinatorial properties of Clifford algebras are exploited to count partitions and nonoverlapping partitions of [n]. Th...
139
click to vote
EJC
2008
15 years 6 months ago
2008
Abstract. We prove a general theorem on semigroup functions that implies characterizations of graph partition functions in terms of the positive semidefiniteness (`reflection posit...
136
click to vote
COMBINATORICS
2006
15 years 6 months ago
2006
Let m be a positive integer whose smallest prime divisor is denoted by p, and let Zm denote the cyclic group of residues modulo m. For a set B = {x1, x2, . . . , xm} of m integers...
162
click to vote
DCG
2006
15 years 6 months ago
2006
We show, with an elementary proof, that the number of halving simplices in a set of n points in R4 in general position is O(n4-2/45). This improves the previous bound of O(n4-1/13...
154
click to vote
IPL
2008
15 years 6 months ago
2008
Let S be a set of n points in general position in the plane, labelled bijectively with the integers {0, 1, . . ., n - 1}. Each edge (the straight segment that joins two points) is...