Se. Kuznetsov, SIGMA-MODERATE SOLUTIONS OF LU=U(ALPHA) AND FINE TRACE ON THE BOUNDARY, Comptes rendus de l'Academie des sciences. Serie 1, Mathematique, 326(10), 1998, pp. 1189-1194
We investigate the class of all positive solutions of the equation Lu
= u(alpha), 1 < alpha less than or equal to 2 in a smooth domain E sub
set of R-d. We define the fine trace tr(u) of a solution u as a pair (
Gamma, nu), where Gamma is a set of singular boundary points of u, and
nu is a certain sigma-finite measure on the complement of Gamma. We d
escribe all possible traces and we construct the minimal solution with
the given trace. (C) Academie des Sciences/Elsevier, Paris.