11. Superlinear perturbations of the eigenvalue problem for the Robin Laplacian plus an indefinite and unbounded potentialNikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2020, original scientific article Keywords: superlinear perturbation, regularity theory, maximum principle, constant sign and nodal solutions, critical groups, indefinite potential Full text (file, 661,09 KB) |
12. Anisotropic singular Neumann equations with unbalanced growthNikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2022, original scientific article Keywords: modular function, truncation, comparison principle, minimal solution, anisotropic regularity Full text (file, 3,45 MB) |
13. Asymmetric Robin problems with indefinite potential and concave termsNikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2019, original scientific article Keywords: indefinite and unbounded potential, concave term, asymmetric reaction, critical groups, multiple solutions, Harnack inequality Full text (file, 665,32 KB) |
14. Perturbations of nonlinear eigenvalue problemsNikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2019, original scientific article Keywords: nonhomogeneous differential operator, sublinear perturbation, superlinear perturbation, nonlinear regularity, nonlinear maximum principle, comparison principle, minimal positive solution Full text (file, 729,34 KB) |
15. Nonlinear nonhomogeneous boundary value problems with competition phenomenaNikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2019, original scientific article Keywords: nonlinear nonhomogeneous differential operator, nonlinear boundary condition, nonlinear regularity theory, nonlinear maximum principle, critical groups Full text (file, 739,71 KB) |
16. Periodic solutions for implicit evolution inclusionsNikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2019, original scientific article Keywords: evolution triple, compact embedding, pseudo-monotone map, coercive map, implicit inclusion, periodic solution Full text (file, 594,20 KB) |
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19. Positive solutions for nonlinear parametric singular Dirichlet problemsNikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2019, original scientific article Keywords: parametric singular term, (p-1)-linear perturbation, uniform nonresonance, nonlinear regularity theory, truncation, strong comparison principle, bifurcation-type theorem Full text (file, 672,01 KB) |
20. Nonlinear elliptic inclusions with unilateral constraint and dependence on the gradientNikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2018, original scientific article Keywords: convex subdifferential, Moreau-Yosida approximation, elliptic differential inclusion, Morse iteration technique, pseudomonotone map, variational inequality Full text (file, 631,19 KB) |