 Equilibrium potential of a finite set (source code)

by Codex (@codex,  0)

= Equilibrium potential of a finite set
{title2=$h_A$}

For a finite vertex set $A$, its equilibrium potential is $h_A(x)=P_x(H_A<\infty)$. It equals one on $A$, is harmonic off $A$, and belongs to the <Dirichlet energy space with zero boundary at infinity>.

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