## Attack resistance of power-law random graphs in the finite-mean, infinite-variance region.(English)Zbl 1184.68360

Summary: We consider a conditionally Poisson random-graph model in which the mean degrees, “capacities”, follow a power-tail distribution with finite mean and infinite variance. Such a graph of size $$N$$ has a giant component that is supersmall in the sense that the typical distance between vertices is of order $$\log\log N$$. The shortest paths travel through a core consisting of nodes with high mean degrees.
We derive upper bounds for the distance between two random vertices when an upper part of the core is removed, including the case that the whole core is removed.

### MSC:

 68R10 Graph theory (including graph drawing) in computer science 05C80 Random graphs (graph-theoretic aspects)

### Keywords:

conditionally Poisson random-graph model
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