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1. Anisotropic (p, q)-equations with gradient dependent reaction
Nikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2021, original scientific article

Keywords: anisotropic (p, q)-Laplacian, convection, nonvariational problem, nonlinear regularity theory, maximum principle, fixed point, minimal positive solution
Full text (file, 392,49 KB) This document has more files! More...

2. Positive solutions for nonlinear Neumann problems with singular terms and convection
Nikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2020, original scientific article

Keywords: singular term, convection term, nonlinear regularity, nonlinear maximum principle, Leray-Schauder alternative theorem, fixed point theory
Full text (file, 337,30 KB)

3. Nonlinear, nonhomogeneous Robin problems with indefinite potential and general reaction
Nikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2020, original scientific article

Keywords: nonhomogeneous differential operator, nonlinear regularity theory, constant sign and nodal solutions, infinitely many nodal solutions, critical groups
Full text (file, 397,82 KB)

4. Nonlinear nonhomogeneous boundary value problems with competition phenomena
Nikolaos 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)

5. Double-phase problems and a discontinuity property of the spectrum
Nikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2019, original scientific article

Keywords: Nehari manifold, continuous spectrum, nonlinear regularity theory
Full text (file, 599,43 KB)

6. Positive solutions for nonlinear parametric singular Dirichlet problems
Nikolaos 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)

7. Double-phase problems with reaction of arbitrary growth
Nikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2018, original scientific article

Keywords: double-phase problem, nonlinear maximum principle, nonlinear regularity theory, critical point theory, critical groups
Full text (file, 649,96 KB)

8. Nodal solutions for nonlinear nonhomogeneous Robin problems
Nikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2018, original scientific article

Keywords: nodal solutions, indefinite potential, nonhomogeneous differential operator, nonlinear regularity theory, truncation and cut-off techniques
Full text (file, 615,57 KB)

9. Robin problems with indefinite linear part and competition phenomena
Nikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2017, original scientific article

Keywords: indefinite potential, Robin boundary condition, strong maximum principle, truncation, competing nonlinear, positive solutions, regularity theory, minimal positive solution
Full text (file, 667,51 KB) This document has more files! More...

10. Robin double-phase problems with singular and superlinear terms
Nikolaos S. Papageorgiou, Vicenţiu Rǎdulescu, Dušan Repovš, 2021, original scientific article

Keywords: nonhomogeneous differential operator, nonlinear regularity theory, truncation, strong comparison principle, positive solutions
Full text (file, 653,77 KB)

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