On the solvability of a nonlinear two point BVP between the first two eigenvalues

zbMath0722.34018MaRDI QIDQ755962

Franic Ikechukwu Njoku, Fabio Zanolin

Publication date: 1990

Published in: Differential and Integral Equations (Search for Journal in Brave)

zbMATH Keywords

a priori boundseigenvaluesoscillatory solutionstopological degree

Mathematics Subject Classification ID

Nonlinear boundary value problems for ordinary differential equations (34B15) Nonlinear oscillations and coupled oscillators for ordinary differential equations (34C15) Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations (34C10) Eigenvalues, estimation of eigenvalues, upper and lower bounds of ordinary differential operators (34L15)

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A nonresonance condition for radial solutions of a nonlinear Neumann elliptic problem ⋮ Nonresonance conditions on the potential for a semilinear Dirichlet problem

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