Mathematics – Optimization and Control
Scientific paper
2007-06-28
Linear Algebra and Appl. 430 (2009), 360-369
Mathematics
Optimization and Control
10 pages (v3) minor changes, to appear in Linear Algebra and Its Applications
Scientific paper
10.1016/j.laa.2008.07.025
This paper is a tutorial in a general and explicit procedure to simplify semidefinite programs which are invariant under the action of a symmetry group. The procedure is based on basic notions of representation theory of finite groups. As an example we derive the block diagonalization of the Terwilliger algebra of the binary Hamming scheme in this framework. Here its connection to the orthogonal Hahn and Krawtchouk polynomials becomes visible.
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