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Maximum independent, minimally redundant sets in series-parallel graphs. (English) Zbl 0794.05124
Let \(G\) be a graph. The authors introduce a new graph invariant, \(\text{BIT}(G)\), the minimum total redundance of a maximum independent set. The invariant is defined to be the minimum value of \(\Sigma(1+\deg(v))\), \(v\in W\), over all maximum independent sets \(W\) of \(G\). They show that the problem whether \(\text{BIT}(G)> k\) is NP-hard.

05C99 Graph theory
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