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Publications
| 1. | N. S. Papageorgiou, P. Winkert, Applied Nonlinear Functional Analysis. An Introduction, De Gruyter, Berlin, 2018, x+612 pp. [de Gruyter] |
| 55. | L. Gasiński, P. Winkert, Sign changing solution for a double phase problem with nonlinear boundary condition via the Nehari manifold, J. Differential Equations 274 (2021), 1037-1066. [Preprint] [Journal] |
| 54. | N. S. Papageorgiou, P. Winkert, Singular Dirichlet (p,q)-equations, Mediterr. J. Math, accepted 2020. [Preprint] [Journal] |
| 53. | S. Zeng, Y. Bai, L. Gasiński, P. Winkert, Convergence analysis for double phase obstacle problems with multivalued convection term, Adv. Nonlinear Anal. 10 (2021), no. 1, 659–672. [Preprint] [Journal] |
| 52. | A. Bahrouni, V. D. Rădulescu, P. Winkert, Small perturbations of Robin problems driven by the p-Laplacian plus a positive potential, Topol. Methods Nonlinear Anal., accepted 2020. [Preprint] [Journal] |
| 51. | N. S. Papageorgiou, P. Winkert, (p,q)-Equations with singular and concave convex nonlinearities, Appl. Math. Optim., accepted 2020. [Preprint] [Journal] |
| 50. | S. Zeng, L. Gasiński, P. Winkert, Y. Bai, Existence of solutions for double phase obstacle problems with multivalued convection term, J. Math. Anal. Appl., accepted 2020. [Preprint] [Journal] |
| 49. | N. S. Papageorgiou, P. Winkert, Positive solutions for weighted singular p-Laplace equations via Nehari manifolds, Appl. Anal., accepted 2019. [Preprint] [Journal] |
| 48. | A. Bahrouni, V. D. Rădulescu, P. Winkert, Double phase problems with variable growth and convection for the Baouendi-Grushin operator, Z. Angew. Math. Phys. 71 (2020), no. 6, 183. [Preprint] [Journal] |
| 47. | A. Bahrouni, V. D. Rădulescu, P. Winkert, Robin fractional problems with symmetric variable growth, J. Math. Phys. 61 (2020), no. 10, 101503. [Preprint] [Journal] |
| 46. | S. Zeng, Y. Bai, L. Gasiński, P. Winkert, Existence results for double phase implicit obstacle problems involving multivalued operators, Calc. Var. Partial Differential Equations 59 (2020), no. 5, 176. [Preprint] [Journal] |
| 45. | G. Marino, P. Winkert, Existence and uniqueness of elliptic systems with double phase operators and convection terms, J. Math. Anal. Appl. 492 (2020), no. 1, 124423, 13 pp. [Preprint] [Journal] |
| 44. | A. Bahrouni, V. D. Rădulescu, P. Winkert, A critical point theorem for perturbed functionals and low perturbations of differential and nonlocal systems, Adv. Nonlinear Stud. 20 (2020), no. 3, 663-674. [Preprint] [Journal] |
| 43. | G. Marino, P. Winkert, L∞-bounds for general singular elliptic equations with convection term, Appl. Math. Lett. 107 (2020), 106410, 6 pp. [Preprint] [Journal] |
| 42. | L. Gasiński, P. Winkert, Constant sign solutions for double phase problems with superlinear nonlinearity, Nonlinear Anal. 195 (2020), 111739, 9 pp. [Preprint] [Journal] |
| 41. | Y. Bai, L. Gasiński, P. Winkert, S. Zeng, W1,p versus C1: The nonsmooth case involving critical growth, Bull. Math. Sci. 10 (2020), no. 3, 2050009, 15 pp. [Preprint] [Journal] |
| 40. | L. Gasiński, P. Winkert, Existence and uniqueness results for double phase problems with convection term, J. Differential Equations 268 (2020), no. 8, 4183-4193. [Preprint] [Journal] |
| 39. | G. Marino, P. Winkert, Global a priori bounds for weak solutions of quasilinear elliptic systems with nonlinear boundary condition, J. Math. Anal. Appl. 482 (2020), no. 2, 123555, 19 pp. [Preprint] [Journal] |
| 38. | S. A. Marano, P. Winkert, Corrigendum to „On a quasilinear elliptic problem with convection term and nonlinear boundary condition“ [Nonlinear Anal. 187 (2019) 159–169], Nonlinear Anal. 189 (2019), 111578. [Preprint] [Journal] |
| 37. | G. D’Aguì, B. Di Bella, P. Winkert, Two positive solutions for nonlinear fourth-order elastic beam equations, Electron. J. Qual. Theory Differ. Equ. 2019, Paper No. 37, 12 pp. [Preprint] [Journal] |
| 36. | G. Bonanno, G. D’Aguì, P. Winkert, A two critical points theorem for non-differentiable functions and applications to highly discontinuous PDE’s, Pure Appl. Funct. Anal. 4 (2019), no. 4, 709–725. [Preprint] [Journal] |
| 35. | S. A. Marano, P. Winkert, On a quasilinear elliptic problem with convection term and nonlinear boundary condition, Nonlinear Anal. 187 (2019), 159–169. [Preprint] [Journal] |
| 34. | D. Motreanu, P. Winkert, Existence and asymptotic properties for quasilinear elliptic equations with gradient dependence, Appl. Math. Lett. 95 (2019), 78–84. [Preprint] [Journal] |
| 33. | N. S. Papageorgiou, P. Winkert, Nonlinear systems with Hartman-type perturbations, Monatsh. Math. 190 (2019), no. 2, 389–404. [Preprint] [Journal] |
| 32. | G. Marino, P. Winkert, Moser iteration applied to elliptic equations with critical growth on the boundary, Nonlinear Anal. 180 (2019), 154–169. [Preprint] [Journal] |
| 31. | N. S. Papageorgiou, P. Winkert, Solutions with sign information for nonlinear nonhomogeneous problems, Math. Nachr. 292 (2019), no. 4, 871–891. [Preprint] [Journal] |
| 30. | N. S. Papageorgiou, P. Winkert, Singular p-Laplacian equations with superlinear perturbation, J.Differential Equations 266 (2019), no. 2-3, 1462–1487. [Preprint] [Journal] |
| 29. | N. S. Papageorgiou, P. Winkert, Double resonance for Robin problems with indefinite and unbounded potential, Discrete Contin. Dyn. Syst. Ser. S 11 (2018), no. 2, 323–344. [Preprint] [Journal] |
| 28. | N. S. Papageorgiou, P. Winkert, Asymmetric (p,2)-equations, superlinear at +∞, resonant at -∞, Bull. Sci. Math. 141 (2017), no. 5, 443–488. [Preprint] [Journal] |
| 27. | S. El Manouni, H. Hajaiej, P. Winkert, Nonlinear problems for the fractional Laplacian in RN involving parameters, Minimax Theory and its Applications 2 (2017), no. 2, 265–283. [Preprint] [Journal] |
| 26. | N. S. Papageorgiou, P.Winkert, Positive solutions for nonlinear nonhomogeneous Dirichlet problems with concave-convex nonlinearities, Positivity 20 (2016), no. 4, 945–979. [Preprint] [Journal] |
| 25. | P. Winkert, R. Zacher, Global a priori bounds for weak solutions to quasilinear parabolic equations with nonstandard growth, Nonlinear Anal. 145 (2016), 1-23. [Preprint] [Journal] |
| 24. | N. S. Papageorgiou, P. Winkert, Nonlinear Robin problems with a reaction of arbitrary growth, Ann. Mat. Pura Appl. (4) 195 (2016), no. 4, 1207–1235. [Preprint] [Journal] |
| 23. | G. Bonanno, G. D’Aguì, P. Winkert, Sturm-Liouville equations involving discontinuous nonlinearities, Minimax Theory and its Applications 1 (2016), no. 1, 125–143. [Preprint] [Journal] |
| 22. | N. S. Papageorgiou, P. Winkert, Nonlinear nonhomogeneous Dirichlet equations involving a superlinear nonlinearity, Results Math. 70 (2016), no. 1, 31–79. [Preprint] [Journal] |
| 21. | P. Winkert, R. Zacher, Corrigendum to „A priori bounds for weak solutions to elliptic equations with nonstandard growth“ [Discrete Contin. Dyn. Syst. Ser. S 5 (2012), 865–878.], Discrete Contin. Dyn. Syst. Ser. S, veröffentlicht als Note, 2015, 1–3. [Preprint] [Journal] |
| 20. | S. El Manouni, N. S. Papageorgiou, P. Winkert, Parametric nonlinear nonhomogeneous Neumann equations involving a nonhomogeneous differential operator, Monatsh. Math. 177 (2015), no. 2, 203–233. [Preprint] [Journal] |
| 19. | N. S. Papageorgiou, P. Winkert, Resonant (p; 2)-equations with concave terms, Appl. Anal. 94 (2015), no. 2, 342–360. [Preprint] [Journal] |
| 18. | P. Winkert, On the boundedness of solutions to elliptic variational inequalities, Set-Valued Var. Anal. 22 (2014), no. 4, 763–781. [Preprint] [Journal] |
| 17. | G. Bonanno, P. Winkert, Multiplicity results to a class of variational-hemivariational inequalities, Topol. Methods Nonlinear Anal. 43 (2014), no. 2, 493–516. [Preprint] [Journal] |
| 16. | N. S. Papageorgiou, P. Winkert, On a parametric nonlinear Dirichlet problem with subdiffusive and equidiffusive reaction, Adv. Nonlinear Stud. 14 (2014), no. 3, 747–773. [Preprint] [Journal] |
| 15. | G. Bonanno, D. Motreanu, P. Winkert, Boundary value problems with nonsmooth potential, constraints and parameters, Dynam. Systems Appl. 22 (2013), no. 2-3, 385–396. [Preprint] |
| 14. | P. Winkert, Multiplicity results for a class of elliptic problems with nonlinear boundary condition, Commun. Pure Appl. Anal. 12 (2013), no. 2, 785–802. [Preprint] [Journal] |
| 13. | P. Winkert, R. Zacher, A priori bounds for weak solutions to elliptic equations with nonstandard growth, Discrete Contin. Dyn. Syst. Ser. S 5 (2012), no. 4, 865–878. [Preprint] [Journal] |
| 12. | D. Motreanu, P. Winkert, On the Fučík spectrum for the p-Laplacian with Robin boundary condition, Nonlinear Anal. 74 (2011), no. 14, 4671–4681. [Preprint] [Journal] |
| 11. | G. Bonanno, D. Motreanu, P. Winkert, Variational-hemivariational inequalities with small perturbations of nonhomogeneous Neumann boundary conditions, J. Math. Anal. Appl. 381 (2011), no. 2, 627–637. [Preprint] [Journal] |
| 10. | P. Winkert, Multiple solution results for elliptic Neumann problems involving setvalued nonlinearities, J. Math. Anal. Appl. 377 (2011), no. 1, 121–134. [Preprint] [Journal] |
| 9. | D. Motreanu, P. Winkert, Variational-hemivariational inequalities with nonhomogeneous Neumann boundary condition, Matematiche (Catania) 65 (2010), no. 2, 109–119. [Preprint] [Journal] |
| 8. | P. Winkert, Sign-changing and extremal constant-sign solutions of nonlinear elliptic Neumann boundary value problems, Bound. Value Probl. 2010 (2010), 1–22. [Preprint] [Journal] |
| 7. | P. Winkert, Local C1-minimizers versus local W1,p-minimizers of nonsmooth functionals, Nonlinear Anal. 72 (2010), no. 11, 4298–4303. [Preprint] [Journal] |
| 6. | P. Winkert, L∞-estimates for nonlinear elliptic Neumann boundary value problems, NoDEA Nonlinear Differential Equations Appl. 17 (2010), no. 3, 289–302. [Preprint] [Journal] |
| 5. | P. Winkert, Constant-sign and sign-changing solutions for nonlinear elliptic equations with Neumann boundary values, Adv. Differential Equations 15 (2010), no. 5-6, 561–599. [Preprint] [Journal] |
| 4. | P. Winkert, Entire extremal solutions for elliptic inclusions of Clarke’s gradient type, Z. Anal. Anwend. 29 (2010), no. 1, 63–75. [Preprint] [Journal] |
| 3. | S. Carl, P. Winkert, General comparison principle for variational-hemivariational inequalities, J. Inequal. Appl. (2009), 1–29. [Preprint] [Journal] |
| 2. | P. Brückmann, P. Winkert, T-symmetrical tensor differential forms with logarithmic poles along a hypersurface section, Int. J. Pure Appl. Math. 46 (2008), no. 1, 111–136. [Preprint] [Journal] |
| 1. | P. Winkert, Discontinuous variational-hemivariational inequalities involving the p-Laplacian, J. Inequal. Appl. (2007), 1–11. [Preprint] [Journal] |
| 2. | D. Motreanu, P. Winkert, Elliptic problems with nonhomogeneous differential operators and multiple solutions, Kapitel 15 in: Mathematics Without Boundaries (Surveys in Pure Mathematics), 357–379, Springer, New York, 2014. [Preprint] [Springer] |
| 1. | D. Motreanu, P. Winkert, The Fucík spectrum for the negative p-Laplacian with different boundary conditions, Kapitel 28 in: Nonlinear Analysis (Stability, Approximation, and Inequalities), 471–485, Springer, New York, 2012. [Preprint] [Springer] |
| 3. | P. Winkert, Global a priori bounds and multiplicity results for quasilinear elliptic equations and inequalities, Habilitation thesis, Technische Universität Berlin, December 2015. [Download] |
| 2. | P. Winkert, Comparison principles and multiple solutions for nonlinear elliptic problems, PhD thesis, Martin-Luther-Universität Halle-Wittenberg, July 2009. [Download] |
| 1. | P. Winkert, T-symmetrische Tensor-Differentialformen mit logarithmischen Polen, Diploma (Master) thesis, Martin-Luther-Universität Halle-Wittenberg, July 2006. |
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