Keywords: superlinear perturbation, regularity theory, maximum principle, constant sign and nodal solutions, critical groups, indefinite potentialFull text (file, 661,09 KB)
Keywords: nonhomogeneous differential operator, nonlinear regularity theory, constant sign and nodal solutions, infinitely many nodal solutions, critical groupsFull text (file, 397,82 KB)
Keywords: unilateral growth, constant sign and nodal solutions, multiplicity theorems, critical groupsFull text (file, 656,87 KB)
Keywords: asymmetric reaction, resonance, Fučik spectrum, constant sign solutions, nodal solution, critical groups, Morse relationFull text (file, 684,43 KB)
Keywords: near resonance, local minimizer, critical group, constant sign and nodal solutions, nonlinear maximum principleFull text (file, 711,21 KB)
Keywords: locally Lipschitz function, Clarke subdifferential, resonance, extremal constant sign solutions, nodal solutions, nonlinear nonhomogeneous differential operatorFull text (file, 514,03 KB)