On Wiener's Criterion for an Elliptic Equation with Nonuniform Degeneration
R. A. Amanov, Farman Imran Mamedov · Georgian Mathematical Journal · 2007
Abstract For some class of nonuniformly degenerated elliptic equations of second order, a necessary and sufficient condition for boundary points to be regular is found. This condition is an analogue of Wiener's criterion for the Laplace equation.