zbMATH — the first resource for mathematics

Singular sets and number of solutions of nonlinear boundary value problems. (English) Zbl 0529.35027

MSC:
 35J65 Nonlinear boundary value problems for linear elliptic equations 35P30 Nonlinear eigenvalue problems and nonlinear spectral theory for PDEs 35A05 General existence and uniqueness theorems (PDE) (MSC2000) 47A53 (Semi-) Fredholm operators; index theories 47B06 Riesz operators; eigenvalue distributions; approximation numbers, $$s$$-numbers, Kolmogorov numbers, entropy numbers, etc. of operators
Full Text: