Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-28T08:52:29.318Z Has data issue: false hasContentIssue false

A Semilinear Dirichlet Problem

Published online by Cambridge University Press:  20 November 2018

Alfonso Castro*
Affiliation:
Centro de Investigacion del IPN, Mexico
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Introduction and notations. Let Ω be a bounded region in Rn. In this note we discuss the existence of weak solutions (see [4, Section 2]) of the Dirichlet problem

(I)

where Δ is the Laplacian operator, g : Ω × RR and f : Ω × Rn+1R are functions satisfying the Caratheodory condition (see [2, Section 3]), and ∇ is the gradient operator.

We let λ1 < λ2 ≦ … ≦ λm ≦ … denote the sequence of numbers for which the problem

(II)

has nontrivial weak solutions.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1979

References

1. Adams, R., Sobolev spaces, (Academic Press, 1975).Google Scholar
2. de Figueiredo, D. J., The Dirichet problem for non-linear elliptic equations: a Hilbert space approach, Lecture Notes in Math. 446, (Springer, 1974).Google Scholar
3. Fitzpatrick, P. M., Existence results for equations involving noncompact perturbations of Fredholm mappings with applications to differential equations (mimeographed copy).Google Scholar
4. Landesman, E. and Lazer, A. C., Linear eigenvalue problems and a nonlinear boundary value problem, Pacific J. of Math.. 33 (1970), 311328.Google Scholar
5. Lazer, A., Landesman, E. and Meyers, D., On saddle point problems in the calculus of variations, the Ritz algorithm, and monotone convergence, J. Math. Anal. Appl.. 53 (1975), 594614.Google Scholar
6. Vainberg, M., Variational methods in the study of nonlinear operators, (Holden-Day, San Francisco, 1964).Google Scholar