Method of rotating planes applied to a singularly perturbed Neumann problem. (English) Zbl 1221.35170
MSC:
| 35J65 | Nonlinear boundary value problems for linear elliptic equations |
| 35A30 | Geometric theory, characteristics, transformations in context of PDEs |
| 35B05 | Oscillation, zeros of solutions, mean value theorems, etc. in context of PDEs |
| 35B25 | Singular perturbations in context of PDEs |
| 35B40 | Asymptotic behavior of solutions to PDEs |
| 35J20 | Variational methods for second-order elliptic equations |
