is a spherical -design in iff it is possible to exactly determine
the average value on
of any polynomial of degree at most by sampling at the points of . In other words,
Spherical -designs
give the placement of
points on a sphere for use in numerical integration with equal weights.
Colbourn, C. J. and Dinitz, J. H. (Eds.). "Spherical -Designs." Ch. 44 in CRC
Handbook of Combinatorial Designs. Boca Raton, FL: CRC Press, pp. 462-466,
1996.Hardin, R. H. and Sloane, N. J. A. S. "McLaren's
Improved Snub Cube and Other New Spherical Designs in Three Dimensions." Disc.
Comput. Geom.15, 429-331, 1996.Hardin, R. H.; Sloane,
N. J. A. S.; and Smith, W. D. Spherical Codes. In preparation.
http://www.research.att.com/~njas/sphdesigns/.McLaren,
A. D. "Optimal Numerical Integration on a Sphere." Math. Comput.17,
361-383, 1963.