Extremal properties of the first eigenvalue of a class of elliptic eigenvalue problems
Extremal solutions for nonlinear neumann problems
In this paper, we study a nonlinear Neumann problem. Assuming the existence of an upper and a lower solution, we prove the existence of a least and a greatest solution between them. Our approach uses the theory of operators of monotone type together with truncation and penalization techniques.
Extremal values of half-eigenvalues for -Laplacian with weights in balls.
Extrinsic Bounds on ... of ... on a Compact Manifold