N-Cluster
A Lattice Point configuration with no three points Collinear and no four Concyclic. An example is the6-cluster (0, 0), (132, 
), (546, 
), (960, ), (1155, 540), (546, 1120). Call the Radius of thesmallest Circle centered at one of the points of an N-cluster which contains all the points in the N-cluster theExtent. Noll and Bell (1989) found 91 nonequivalent prime 6-clusters of Extent less than 
, but found no7-clusters.
References
Guy, R. K. Unsolved Problems in Number Theory, 2nd ed. New York: Springer-Verlag, p. 187, 1994. Noll, L. C. and Bell, D. I. ``
-clusters for 
.'' Math. Comput. 53, 439-444, 1989.
- Wave
- Wave Equation
- Wavelet
- Wavelet Matrix
- Wavelet Transform
- Wave Operator
- Wave Surface
- Weak Convergence
- Weak Law of Large Numbers
- Weakly Binary Tree
- Weakly Complete Sequence
- Weakly Independent
- Weakly Triple-Free Set
- Weber Differential Equations
- Weber Functions
- Weber's Discontinuous Integrals
- Weber's Formula
- Weber-Sonine Formula
- Weber's Theorem
- Web Graph
- Wedderburn's Theorem
- Weddle's Rule
- Wedge
- Wedge Product
- Weekday