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Note that our starting point is that there are no known attributes to the vertices. If one would know, e.g., the gender of the actors in a social network, the fraction of edges between actors of the same gender is in the interval [0,1].
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N/2,N/2.
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1 = 0. We will not speculate in the reason for this since the effect is small and the overall picture is clear.
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65
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33645062376
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2 on the two-core (the maximal subgraph with minimal degree 2) of G. This would eliminate circuit-free subgraphs that contain no information about the degree of heterophilous preference among the agents forming the network.
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N the contribution of circuits of length i to the sum is i times the number of them, this gives Eq. (A1a).
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