Keywords: critical Sobolev exponent, indefinite singular potential, principal eigenvalue, concentration-compactness, singularityFull text (file, 610,98 KB)
Keywords: indefinite and unbounded potential, critical groups, multiple solutions, nonlinear regularity, resonance, Robin boundary condition, strong comparison, truncationFull text (file, 673,65 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: local minimizers, p-Laplacian, strong comparison, positive solutions, nonlinear regularity, minimal solution, indefinite potentialFull text (file, 653,28 KB)