Finding and Investigating Exact Spherical Codes
Wang, Jeffrey
Experiment. Math., Tome 18 (2009) no. 1, p. 249-256 / Harvested from Project Euclid
In this paper we present the results of computer searches using a variation of an energy-minimization algorithm used by Kottwitz for finding good spherical codes. We prove that exact codes exist by representing the inner products between the vectors as algebraic numbers. For selected interesting cases, we include detailed discussion of the configurations. Of particular interest are the $20$-point code in $\mathbb{R}^6$ and the $24$-point code in $\mathbb{R}^7$, each of which is the union of two cross-polytopes in parallel hyperplanes. Finally, we catalogue all of the codes we have found.
Publié le : 2009-05-15
Classification:  Spherical,  code,  energy,  minimization,  05B40,  52C17
@article{1259158434,
     author = {Wang, Jeffrey},
     title = {Finding and Investigating Exact Spherical Codes},
     journal = {Experiment. Math.},
     volume = {18},
     number = {1},
     year = {2009},
     pages = { 249-256},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1259158434}
}
Wang, Jeffrey. Finding and Investigating Exact Spherical Codes. Experiment. Math., Tome 18 (2009) no. 1, pp.  249-256. http://gdmltest.u-ga.fr/item/1259158434/