Recently A. Schrijver derived new upper bounds for binary codes using semidefinite programming. In this paper we adapt this approach to codes on the unit sphere and we compute new upper bounds for the kissing number in several dimensions. In particular our computations give the (known) values for the cases n = 3, 4, 8, 24.
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Journal of the American Mathematical Society
Semidefinite programming and combinatorial optimization , Spinoza prijs Lex Schrijver
Networks and Optimization

Bachoc, C, & Vallentin, F. (2008). New upper bounds for kissing numbers from semidefinite programming. Journal of the American Mathematical Society, 21, 909–924.