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Lovasz theta function bounds the Shannon capacity of graphs. What are some other uses of the function - especially in asymptotic coding theory and optimization problems?

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Community wiki? –  Yemon Choi Nov 24 '11 at 2:22
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Schrijver long ago established a connection to the Delsarte bound for a Hamming association scheme: A. Schrijver, "A comparison of the Delsarte and Lovasz bounds," IEEE Transactions on Information Theory, 25: 425-429 (1979).

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@Joseph: Good reference. So is there a spectral characterization of minimum distance bounds in particular the GV bound? –  J.A Nov 23 '11 at 19:57
Sorry, unknown, I do not know. –  Joseph O'Rourke Nov 24 '11 at 14:37
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