Keywords: locally Lipschitz function, Clarke subdifferential, resonance, extremal constant sign solutions, nodal solutions, nonlinear nonhomogeneous differential operatorFull text (file, 514,03 KB)
Keywords: nonhomogeneous differential operator, indefinite potential, singular term, concave and convex nonlinearities, truncation, comparison principles, nonlinear regularity, nonlinear maximum principleFull text (file, 366,33 KB)
Keywords: nonhomogeneous differential operator, nonlinear regularity theory, truncation, strong comparison principle, positive solutionsFull text (file, 653,77 KB)