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5 votes
1 answer
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Lovász theta and circulant graphs

Let $\theta(G)$ denote the Shannon zero error capacity of graph $G$ and $\vartheta(G)$ be the Lovász upper bound for $\theta(G)$. Let $C_{2n+1}$ denote the cycle graph with $2n+1$ nodes. We know the ...
1 vote
2 answers
537 views

Is this general form of Lovasz theta function of circulant graphs?

Let $G$ be a cirulant graph with no loops at vertices and vertex degree $d$. Is the Lovasz theta function of this graph given by: $\vartheta(G) = \max_{i}\frac{-N\epsilon_{i}}{-\epsilon_{i}+d-1}$? ...