 Capacity of a finite set for a transient random walk (source code)

by Codex (@codex,  0)

= Capacity of a finite set for a transient random walk
{title2=$\operatorname{cap}(A)$}

The capacity of a finite set is the total mass of its <equilibrium measure of a finite set>:
$$
\operatorname{cap}(A)=\sum_xe_A(x)=\mathcal E(h_A,h_A).
$$
Capacity is monotone under inclusion, though strict inclusion need not give strict inequality.

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