Resonance problems with respect to the Fučík spectrum of the -Laplacian.
Multiple positive solutions for a class of quasilinear elliptic boundary-value problems.
Homological local linking.
Critical groups of critical points produced by local linking with applications.
One-sided resonance for quasilinear problems with asymmetric nonlinearities.
Semilinear elliptic equations having asymptotic limits at zero and infinity.
Multiple positive solutions of singular -Laplacian problems by variational methods.
Sign-changing and multiple solutions for the -Laplacian.
Existence and nonexistence results for a class of quasilinear elliptic systems.
Multiplicity results for -sublinear -Laplacian problems involving indefinite eigenvalue problems via Morse theory.
Multiple positive solutions of singular discrete -Laplacian problems via variational methods.
Basic properties of Sobolev's spaces on time scales.
Multiple positive solutions in the sense of distributions of singular BVPs on time scales and an application to Emden-Fowler equations.
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