5019 search results - page 54 / 1004 » On the Reflexivity of Point Sets |
147
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DCG
2007
15 years 6 months ago
2007
In this paper we investigate the Erd¨os/Falconer distance conjecture for a natural class of sets statistically, though not necessarily arithmetically, similar to a lattice. We pr...
132
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COMBINATORICA
2004
15 years 6 months ago
2004
Consider a k-element subset P of the plane. It is known that the maximum number of sets similar to P that can be found among n points in the plane is (n2 ) if and only if the cros...
154
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JCT
2010
15 years 4 months ago
2010
We study the smallest possible number of points in a topological space having k open sets. Equivalently, this is the smallest possible number of elements in a poset having k order ...
149
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APAL
2004
15 years 6 months ago
2004
Abstract. We start by studying the relationship between two invariants isolated by Shelah, the sets of good and approachable points. As part of our study of these invariants, we pr...
283
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GIS
2004
ACM
16 years 7 months ago
2004
ACM
Moving point object data can be analyzed through the discovery of patterns. We consider the computational efficiency of detecting four such spatio-temporal patterns, namely flock,...