Öztürk, Eylem; Papageorgiou, Nikolaos S. Global multiplicity of positive solutions for nonlinear Robin problems with an indefinite potential term. (English) Zbl 07818671 Result. Math. 79, No. 3, Paper No. 113, 18 p. (2024). MSC: 35J62 35J25 35A01 PDFBibTeX XMLCite \textit{E. Öztürk} and \textit{N. S. Papageorgiou}, Result. Math. 79, No. 3, Paper No. 113, 18 p. (2024; Zbl 07818671) Full Text: DOI OA License
Liu, Zhenhai; Papageorgiou, Nikolaos S. Nonautonomous \((p,q)\)-equations with unbalanced growth and competing nonlinearities. (English. French summary) Zbl 07800983 J. Math. Pures Appl. (9) 182, 164-194 (2024). MSC: 35J60 58E05 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, J. Math. Pures Appl. (9) 182, 164--194 (2024; Zbl 07800983) Full Text: DOI
Liu, Zhenhai; Papageorgiou, Nikolaos S. Resonant-superlinear and resonant-sublinear Dirichlet problems. (English) Zbl 07785609 Bull. Malays. Math. Sci. Soc. (2) 47, No. 1, Paper No. 19, 31 p. (2024). Reviewer: Patrick Winkert (Berlin) MSC: 35J92 35J25 35A01 35A15 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, Bull. Malays. Math. Sci. Soc. (2) 47, No. 1, Paper No. 19, 31 p. (2024; Zbl 07785609) Full Text: DOI
Cen, Jinxia; Gasiński, Leszek; Vetro, Calogero; Zeng, Shengda Parametric anisotropic double phase free boundary problems with Nonlocal terms and convection: existence, stability and asymptotic behavior. (English) Zbl 07800036 Discrete Contin. Dyn. Syst., Ser. S 16, No. 11, 3014-3034 (2023). MSC: 35J92 35J25 35R35 35A01 35B40 PDFBibTeX XMLCite \textit{J. Cen} et al., Discrete Contin. Dyn. Syst., Ser. S 16, No. 11, 3014--3034 (2023; Zbl 07800036) Full Text: DOI
Bai, Yunru; Papageorgiou, Nikolaos S.; Zeng, Shengda Positive solutions for nonlinear singular problems with sign-changing nonlinearities. (English) Zbl 07800033 Discrete Contin. Dyn. Syst., Ser. S 16, No. 11, 2945-2963 (2023). MSC: 35J20 35J60 PDFBibTeX XMLCite \textit{Y. Bai} et al., Discrete Contin. Dyn. Syst., Ser. S 16, No. 11, 2945--2963 (2023; Zbl 07800033) Full Text: DOI
Bai, Yunru; Papageorgiou, Nikolaos S.; Zeng, Shengda Parametric singular double phase Dirichlet problems. (English) Zbl 07797278 Adv. Nonlinear Anal. 12, Article ID 20230122, 20 p. (2023). MSC: 35J60 35J66 35J75 PDFBibTeX XMLCite \textit{Y. Bai} et al., Adv. Nonlinear Anal. 12, Article ID 20230122, 20 p. (2023; Zbl 07797278) Full Text: DOI OA License
Liu, Zhenhai; Papageorgiou, Nikolaos S. Singular anisotropic equations with a sign-changing perturbation. (English) Zbl 07781214 Nonlinear Anal., Model. Control 28, No. 6, 1120-1137 (2023). MSC: 35J92 35J25 35A01 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, Nonlinear Anal., Model. Control 28, No. 6, 1120--1137 (2023; Zbl 07781214) Full Text: Link
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Sun, Xueying Indefinite perturbations of the eigenvalue problem for the nonautonomous \(p\)-Laplacian. (English) Zbl 07765807 Milan J. Math. 91, No. 2, 353-373 (2023). Reviewer: Vladimir Bobkov (Ufa) MSC: 35P30 35B20 35J20 35J62 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Milan J. Math. 91, No. 2, 353--373 (2023; Zbl 07765807) Full Text: DOI
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Zhang, Jian Parametric anisotropic singular equations with \([p(z), q(z)]\)-growth conditions and indefinite perturbation. (English) Zbl 1528.35062 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 117, No. 4, Paper No. 158, 22 p. (2023). Reviewer: Patrick Winkert (Berlin) MSC: 35J75 35A01 35A15 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 117, No. 4, Paper No. 158, 22 p. (2023; Zbl 1528.35062) Full Text: DOI
Bai, Yunru; Papageorgiou, Nikolaos S.; Zeng, Shengda A parametric singular \((p,q)\)-equation with convection. (English) Zbl 1526.35190 Complex Var. Elliptic Equ. 68, No. 11, 1940-1952 (2023). MSC: 35J92 35J25 35A01 PDFBibTeX XMLCite \textit{Y. Bai} et al., Complex Var. Elliptic Equ. 68, No. 11, 1940--1952 (2023; Zbl 1526.35190) Full Text: DOI
Liu, Zhenhai; Papageorgiou, Nikolaos S. On an anisotropic eigenvalue problem. (English) Zbl 1519.35192 Result. Math. 78, No. 5, Paper No. 178, 23 p. (2023). MSC: 35J92 35P30 35A01 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, Result. Math. 78, No. 5, Paper No. 178, 23 p. (2023; Zbl 1519.35192) Full Text: DOI
Gasiński, Leszek; Papageorgiou, Nikolaos S. Singular equations with variable exponents and concave-convex nonlinearities. (English) Zbl 1522.35187 Discrete Contin. Dyn. Syst., Ser. S 16, No. 6, 1414-1434 (2023). Reviewer: Calogero Vetro (Palermo) MSC: 35J20 35J60 35J25 35A01 PDFBibTeX XMLCite \textit{L. Gasiński} and \textit{N. S. Papageorgiou}, Discrete Contin. Dyn. Syst., Ser. S 16, No. 6, 1414--1434 (2023; Zbl 1522.35187) Full Text: DOI
Leonardi, Salvatore; Papageorgiou, Nikolaos S. Positive solutions for a class of singular \((p, q)\)-equations. (English) Zbl 1519.35190 Adv. Nonlinear Anal. 12, Article ID 20220300, 9 p. (2023). MSC: 35J92 35J75 35J25 35J20 PDFBibTeX XMLCite \textit{S. Leonardi} and \textit{N. S. Papageorgiou}, Adv. Nonlinear Anal. 12, Article ID 20220300, 9 p. (2023; Zbl 1519.35190) Full Text: DOI
Matsoukas, Alexandros; Yannakakis, Nikos The double phase Dirichlet problem when the lowest exponent is equal to 1. (English) Zbl 1519.35193 J. Math. Anal. Appl. 526, No. 2, Article ID 127270, 15 p. (2023). MSC: 35J92 35A01 35A02 PDFBibTeX XMLCite \textit{A. Matsoukas} and \textit{N. Yannakakis}, J. Math. Anal. Appl. 526, No. 2, Article ID 127270, 15 p. (2023; Zbl 1519.35193) Full Text: DOI arXiv
Liu, Zhenhai; Papageorgiou, Nikolaos S. A weighted \((p, 2)\)-equation with double resonance. (English) Zbl 1519.35191 Electron. J. Differ. Equ. 2023, Paper No. 30, 18 p. (2023). MSC: 35J92 35A01 35J20 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, Electron. J. Differ. Equ. 2023, Paper No. 30, 18 p. (2023; Zbl 1519.35191) Full Text: Link
Cai, Li; Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D. Multiple and nodal solutions for parametric Dirichlet equations driven by the double phase differential operator. (English) Zbl 1522.35247 Complex Anal. Oper. Theory 17, No. 5, Paper No. 62, 28 p. (2023). Reviewer: Calogero Vetro (Palermo) MSC: 35J62 35J25 35A01 PDFBibTeX XMLCite \textit{L. Cai} et al., Complex Anal. Oper. Theory 17, No. 5, Paper No. 62, 28 p. (2023; Zbl 1522.35247) Full Text: DOI
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Repovš, Dušan D. Global multiplicity for parametric anisotropic Neumann \((p,q)\)-equations. (English) Zbl 1514.35243 Topol. Methods Nonlinear Anal. 61, No. 1, 393-422 (2023). MSC: 35J92 35J25 35A01 35J20 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Topol. Methods Nonlinear Anal. 61, No. 1, 393--422 (2023; Zbl 1514.35243) Full Text: DOI arXiv
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Zhang, Wen Global existence and multiplicity for nonlinear Robin eigenvalue problems. (English) Zbl 1514.35026 Result. Math. 78, No. 4, Paper No. 133, 17 p. (2023). MSC: 35B32 35J20 35J25 35J92 35P30 47J15 58E07 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Result. Math. 78, No. 4, Paper No. 133, 17 p. (2023; Zbl 1514.35026) Full Text: DOI
Liu, Zhenhai; Papageorgiou, Nikolaos S. Singular double phase equations. (English) Zbl 1524.35188 Acta Math. Sci., Ser. B, Engl. Ed. 43, No. 3, 1031-1044 (2023). MSC: 35J15 35J62 35J75 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, Acta Math. Sci., Ser. B, Engl. Ed. 43, No. 3, 1031--1044 (2023; Zbl 1524.35188) Full Text: DOI
Papageorgiou, Nikolaos S.; Vetro, Calogero; Vetro, Francesca Singular anisotropic problems with competition phenomena. (English) Zbl 1517.35113 J. Geom. Anal. 33, No. 6, Paper No. 173, 26 p. (2023). Reviewer: Patrick Winkert (Berlin) MSC: 35J75 35J25 35A01 35A15 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., J. Geom. Anal. 33, No. 6, Paper No. 173, 26 p. (2023; Zbl 1517.35113) Full Text: DOI
Papageorgiou, Nikolaos S.; Vetro, Calogero; Vetro, Francesca Positive solutions for singular \((p, q)\)-Laplacian equations with negative perturbation. (English) Zbl 1514.35244 Electron. J. Differ. Equ. 2023, Paper No. 25, 9 p. (2023). Reviewer: Patrick Winkert (Berlin) MSC: 35J92 35J25 35A01 35A02 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Electron. J. Differ. Equ. 2023, Paper No. 25, 9 p. (2023; Zbl 1514.35244) Full Text: Link
Leonardi, Salvatore; Papageorgiou, Nikolaos S. Singular anisotropic double phase problems. (English) Zbl 1518.35404 Result. Math. 78, No. 3, Paper No. 73, 25 p. (2023). Reviewer: Calogero Vetro (Palermo) MSC: 35J92 35J75 35A01 35J20 PDFBibTeX XMLCite \textit{S. Leonardi} and \textit{N. S. Papageorgiou}, Result. Math. 78, No. 3, Paper No. 73, 25 p. (2023; Zbl 1518.35404) Full Text: DOI
Papageorgiou, Nikolaos S.; Zhang, Chao Global multiplicity for the positive solutions of parametric singular \((p, q)\)-equations with indefinite perturbations. (English) Zbl 1512.35205 Bull. Malays. Math. Sci. Soc. (2) 46, No. 1, Paper No. 5, 31 p. (2023). Reviewer: Patrick Winkert (Berlin) MSC: 35J20 35J75 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} and \textit{C. Zhang}, Bull. Malays. Math. Sci. Soc. (2) 46, No. 1, Paper No. 5, 31 p. (2023; Zbl 1512.35205) Full Text: DOI
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Wen, Lixi Strongly singular nonhomogeneous eigenvalue problems. (English) Zbl 1512.35204 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 117, No. 1, Paper No. 32, 17 p. (2023). Reviewer: Patrick Winkert (Berlin) MSC: 35J20 35J75 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 117, No. 1, Paper No. 32, 17 p. (2023; Zbl 1512.35204) Full Text: DOI
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Zhang, Youpei Strongly singular double phase problems. (English) Zbl 1485.35224 Mediterr. J. Math. 19, No. 2, Paper No. 82, 21 p. (2022). MSC: 35J75 35J92 35J20 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Mediterr. J. Math. 19, No. 2, Paper No. 82, 21 p. (2022; Zbl 1485.35224) Full Text: DOI
Papageorgiou, Nikolaos S. Double phase problems: a survey of some recent results. (English) Zbl 1485.35158 Opusc. Math. 42, No. 2, 257-278 (2022). MSC: 35J20 35J60 PDFBibTeX XMLCite \textit{N. S. Papageorgiou}, Opusc. Math. 42, No. 2, 257--278 (2022; Zbl 1485.35158) Full Text: DOI