# zbMATH — the first resource for mathematics

Positive eigenfunctions for $$\Delta u+\lambda f(u) = 0$$. (English) Zbl 0108.28902

##### Keywords:
partial differential equations
Full Text:
##### References:
 [1] Courant, R., u. D. Hilbert: Methoden der Mathematischen Physik, Vol. 2. Berlin 1937. · JFM 63.0449.05 [2] Hardy, G. H., J. E. Littlewood & G. Polya: Inequalities. Cambridge 1934.
This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. It attempts to reflect the references listed in the original paper as accurately as possible without claiming the completeness or perfect precision of the matching.