New York Journal of Mathematics
Volume 13 (2007) 147-157

  

Henry Cohn and Abhinav Kumar

Uniqueness of the (22,891,1/4) spherical code


Published: June 13, 2007
Keywords: Spherical code, kissing configuration, spherical design, Leech lattice
Subject: 52C17, 05B40

Abstract
We use techniques of Bannai and Sloane to give a new proof that there is a unique (22,891,1/4) spherical code; this result is implicit in a recent paper by Cuypers. We also correct a minor error in the uniqueness proof given by Bannai and Sloane for the (23,4600,1/3) spherical code.

Acknowledgements

Kumar was supported by a summer internship in the Theory Group at Microsoft Research and a Putnam Fellowship at Harvard University.


Author information

Henry Cohn:
Microsoft Research, One Microsoft Way, Redmond, WA 98052-6399
cohn@microsoft.com

Abhinav Kumar:
Department of Mathematics, Harvard University, Cambridge, MA 02138
abhinav@math.harvard.edu
Current Address: Microsoft Research, One Microsoft Way, Redmond, WA 98052-6399
abhinavk@microsoft.com