×

zbMATH — the first resource for mathematics

A Picone integral identity for a class of fourth order elliptic differential inequalities. (English) Zbl 0249.35023

MSC:
35J30 Higher-order elliptic equations
35J40 Boundary value problems for higher-order elliptic equations
35P15 Estimates of eigenvalues in context of PDEs
PDF BibTeX XML Cite