Gasiński, Leszek; Papageorgiou, Nikolaos S.; Zhang, Youpei Positive solutions for a class of nonlinear parametric Robin problems. (English) Zbl 07797027 Rend. Circ. Mat. Palermo (2) 73, No. 1, 429-454 (2024). MSC: 35J20 35J60 PDFBibTeX XMLCite \textit{L. Gasiński} et al., Rend. Circ. Mat. Palermo (2) 73, No. 1, 429--454 (2024; Zbl 07797027) Full Text: DOI OA License
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
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Wang, Yitian Constant sign and nodal solutions for resonant double phase problems. (English) Zbl 07772587 Ann. Fenn. Math. 48, No. 2, 757-777 (2023). Reviewer: Calogero Vetro (Palermo) MSC: 35J92 35J25 35A01 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Ann. Fenn. Math. 48, No. 2, 757--777 (2023; Zbl 07772587) 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
Liu, Zhenhai; Papageorgiou, Nikolaos S. Double phase equations with an indefinite concave term. (English) Zbl 1498.35292 Electron. J. Differ. Equ. 2022, Paper No. 55, 10 p. (2022). Reviewer: Patrick Winkert (Berlin) MSC: 35J75 35J20 35J60 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, Electron. J. Differ. Equ. 2022, Paper No. 55, 10 p. (2022; Zbl 1498.35292) Full Text: Link
Liu, Zhenhai; Papageorgiou, Nikolaos S. Anisotropic \((p, q)\)-equations with competition phenomena. (English) Zbl 1513.35268 Acta Math. Sci., Ser. B, Engl. Ed. 42, No. 1, 299-322 (2022). MSC: 35J75 35J20 35J60 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, Acta Math. Sci., Ser. B, Engl. Ed. 42, No. 1, 299--322 (2022; Zbl 1513.35268) Full Text: DOI
Papageorgiou, Nikolaos S.; Winkert, Patrick \((p, q)\)-equations with singular and concave convex nonlinearities. (English) Zbl 1479.35492 Appl. Math. Optim. 84, No. 3, 2601-2628 (2021). Reviewer: Calogero Vetro (Palermo) MSC: 35J92 35J75 35J20 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} and \textit{P. Winkert}, Appl. Math. Optim. 84, No. 3, 2601--2628 (2021; Zbl 1479.35492) Full Text: DOI arXiv
Papageorgiou, Nikolaos S.; Vetro, Calogero; Vetro, Francesca A singular \(( p , q )\)-equation with convection and a locally defined perturbation. (English) Zbl 1479.35491 Appl. Math. Lett. 118, Article ID 107175, 7 p. (2021). Reviewer: Patrick Winkert (Berlin) MSC: 35J92 35B09 35A01 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Appl. Math. Lett. 118, Article ID 107175, 7 p. (2021; Zbl 1479.35491) Full Text: DOI
Papageorgiou, Nikolaos S.; Scapellato, Andrea Nonlinear singular problems with convection. (English) Zbl 1471.35170 J. Differ. Equations 296, 493-511 (2021). Reviewer: Calogero Vetro (Palermo) MSC: 35J92 35B50 35J75 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} and \textit{A. Scapellato}, J. Differ. Equations 296, 493--511 (2021; Zbl 1471.35170) Full Text: DOI
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Repovš, Dušan D. Anisotropic \((p,q)\)-equations with gradient dependent reaction. (English) Zbl 1471.35169 Nonlinearity 34, No. 8, 5319-5343 (2021). Reviewer: Patrick Winkert (Berlin) MSC: 35J92 35J25 35B09 35A01 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Nonlinearity 34, No. 8, 5319--5343 (2021; Zbl 1471.35169) Full Text: DOI arXiv Link
Liu, Zhenhai; Papageorgiou, Nikolaos S. Dirichlet \((p,q)\)-equations with gradient dependent and locally defined reaction. (English) Zbl 1467.35189 Electron. J. Differ. Equ. 2021, Paper No. 34, 8 p. (2021). Reviewer: Patrick Winkert (Berlin) MSC: 35J92 35B09 35A01 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, Electron. J. Differ. Equ. 2021, Paper No. 34, 8 p. (2021; Zbl 1467.35189) Full Text: Link
Liu, Zhenhai; Papageorgiou, Nikolaos S. Positive solutions for resonant (p,q)-equations with convection. (English) Zbl 1448.35266 Adv. Nonlinear Anal. 10, 217-232 (2021). Reviewer: Patrick Winkert (Berlin) MSC: 35J92 35J25 35B09 35A01 PDFBibTeX XMLCite \textit{Z. Liu} and \textit{N. S. Papageorgiou}, Adv. Nonlinear Anal. 10, 217--232 (2021; Zbl 1448.35266) Full Text: DOI
Papageorgiou, Nikolaos S.; Zhang, Youpei Nonlinear nonhomogeneous Dirichlet problems with singular and convection terms. (English) Zbl 1496.35031 Bound. Value Probl. 2020, Paper No. 153, 20 p. (2020). Reviewer: Patrick Winkert (Berlin) MSC: 35B09 35B50 35J75 35J92 35J25 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} and \textit{Y. Zhang}, Bound. Value Probl. 2020, Paper No. 153, 20 p. (2020; Zbl 1496.35031) Full Text: DOI
Gasiński, Leszek; Krech, Ireneusz; Papageorgiou, Nikolaos S. Positive solutions for parametric \((p(z),q(z))\)-equations. (English) Zbl 1480.35134 Open Math. 18, 1076-1096 (2020). Reviewer: Calogero Vetro (Palermo) MSC: 35J20 35J70 PDFBibTeX XMLCite \textit{L. Gasiński} et al., Open Math. 18, 1076--1096 (2020; Zbl 1480.35134) Full Text: DOI
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Repovš, Dušan D. Positive solutions for the Robin \(p\)-Laplacian plus an indefinite potential. (English) Zbl 1465.35157 Pure Appl. Funct. Anal. 5, No. 5, 1217-1236 (2020). Reviewer: Patrick Winkert (Berlin) MSC: 35J20 35J60 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Pure Appl. Funct. Anal. 5, No. 5, 1217--1236 (2020; Zbl 1465.35157) Full Text: arXiv Link
Papageorgiou, Nikolaos S.; Vetro, Calogero; Vetro, Francesca Singular double phase problems with convection. (English) Zbl 1462.35110 Acta Appl. Math. 170, 947-962 (2020). MSC: 35B50 35J25 35J75 35J92 47H10 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Acta Appl. Math. 170, 947--962 (2020; Zbl 1462.35110) Full Text: DOI
Gasiński, Leszek; Papageorgiou, Nikolaos S.; Winowski, Krzysztof Positive solutions for nonlinear Robin problems with concave terms. (English) Zbl 1436.35113 J. Convex Anal. 26, No. 4, 1145-1174 (2019). Reviewer: Vicenţiu D. Rădulescu (Craiova) MSC: 35J20 35J60 PDFBibTeX XMLCite \textit{L. Gasiński} et al., J. Convex Anal. 26, No. 4, 1145--1174 (2019; Zbl 1436.35113) Full Text: Link
Papageorgiou, Nikolaos S.; Zhang, Chao Existence of positive solutions for nonlinear Robin problems with gradient dependence. (English) Zbl 1432.35102 Ann. Acad. Sci. Fenn., Math. 44, No. 2, 739-753 (2019). Reviewer: Andrea Scapellato (Catania) MSC: 35J92 35B09 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} and \textit{C. Zhang}, Ann. Acad. Sci. Fenn., Math. 44, No. 2, 739--753 (2019; Zbl 1432.35102) Full Text: DOI
Averna, Diego; Papageorgiou, Nikolaos S.; Tornatore, Elisabetta Positive solutions for nonlinear Robin problems with convection. (English) Zbl 1422.35087 Math. Methods Appl. Sci. 42, No. 6, 1907-1920 (2019). MSC: 35J92 35B09 PDFBibTeX XMLCite \textit{D. Averna} et al., Math. Methods Appl. Sci. 42, No. 6, 1907--1920 (2019; Zbl 1422.35087) Full Text: DOI
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Repovš, Dušan D. Perturbations of nonlinear eigenvalue problems. (English) Zbl 1417.35021 Commun. Pure Appl. Anal. 18, No. 3, 1403-1431 (2019). Reviewer: Patrick Winkert (Berlin) MSC: 35J20 35J60 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Commun. Pure Appl. Anal. 18, No. 3, 1403--1431 (2019; Zbl 1417.35021) Full Text: DOI arXiv
Gasiński, Leszek; Papageorgiou, Nikolaos S. Nonlinear Dirichlet problems with sign changing drift coefficient. (English) Zbl 1421.35171 Appl. Math. Lett. 90, 209-214 (2019). Reviewer: Vicenţiu D. Rădulescu (Craiova) MSC: 35J92 35B09 58E05 PDFBibTeX XMLCite \textit{L. Gasiński} and \textit{N. S. Papageorgiou}, Appl. Math. Lett. 90, 209--214 (2019; Zbl 1421.35171) Full Text: DOI
Bai, Yunru; Gasiński, Leszek; Papageorgiou, Nikolaos S. Nonlinear nonhomogeneous Robin problems with dependence on the gradient. (English) Zbl 1407.35083 Bound. Value Probl. 2018, Paper No. 17, 24 p. (2018). Reviewer: Vicenţiu D. Rădulescu (Craiova) MSC: 35J60 35B09 PDFBibTeX XMLCite \textit{Y. Bai} et al., Bound. Value Probl. 2018, Paper No. 17, 24 p. (2018; Zbl 1407.35083) Full Text: DOI
Averna, Diego; Papageorgiou, Nikolaos S.; Tornatore, Elisabetta Positive solutions for nonlinear Robin problems. (English) Zbl 1370.35105 Electron. J. Differ. Equ. 2017, Paper No. 204, 25 p. (2017). MSC: 35J25 PDFBibTeX XMLCite \textit{D. Averna} et al., Electron. J. Differ. Equ. 2017, Paper No. 204, 25 p. (2017; Zbl 1370.35105) Full Text: Link
Gasiński, Leszek; Papageorgiou, Nikolaos S. Positive solutions for nonlinear elliptic problems with dependence on the gradient. (English) Zbl 1372.35111 J. Differ. Equations 263, No. 2, 1451-1476 (2017). Reviewer: Dumitru Motreanu (Juiz de Fora) MSC: 35J62 PDFBibTeX XMLCite \textit{L. Gasiński} and \textit{N. S. Papageorgiou}, J. Differ. Equations 263, No. 2, 1451--1476 (2017; Zbl 1372.35111) Full Text: DOI
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D.; Repovš, Dušan D. Positive solutions for perturbations of the Robin eigenvalue problem plus an indefinite potential. (English) Zbl 1365.35017 Discrete Contin. Dyn. Syst. 37, No. 5, 2589-2618 (2017). MSC: 35J05 35J25 35B09 35P99 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} et al., Discrete Contin. Dyn. Syst. 37, No. 5, 2589--2618 (2017; Zbl 1365.35017) Full Text: DOI arXiv
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D. On noncoercive elliptic problems. (English) Zbl 1357.35160 NoDEA, Nonlinear Differ. Equ. Appl. 23, No. 4, Paper No. 42, 17 p. (2016). MSC: 35J91 35J20 58E05 35B09 35J66 35B51 35B38 35B20 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} and \textit{V. D. Rădulescu}, NoDEA, Nonlinear Differ. Equ. Appl. 23, No. 4, Paper No. 42, 17 p. (2016; Zbl 1357.35160) Full Text: DOI
Hu, Shouchuan; Papageorgiou, Nikolaos S. Positive solutions for Robin problems with general potential and logistic reaction. (English) Zbl 1353.35172 Commun. Pure Appl. Anal. 15, No. 6, 2489-2507 (2016). Reviewer: Marius Ghergu (Dublin) MSC: 35J91 35B09 35B32 PDFBibTeX XMLCite \textit{S. Hu} and \textit{N. S. Papageorgiou}, Commun. Pure Appl. Anal. 15, No. 6, 2489--2507 (2016; Zbl 1353.35172) Full Text: DOI
Gasiński, Leszek; Papageorgiou, Nikolaos S. Positive solutions for the generalized nonlinear logistic equations. (English) Zbl 1338.35145 Can. Math. Bull. 59, No. 1, 73-86 (2016). Reviewer: Dumitru Motreanu (Perpignan) MSC: 35J25 35J92 PDFBibTeX XMLCite \textit{L. Gasiński} and \textit{N. S. Papageorgiou}, Can. Math. Bull. 59, No. 1, 73--86 (2016; Zbl 1338.35145) Full Text: DOI
Gasiński, Leszek; O’Regan, Donal; Papageorgiou, Nikolaos S. Positive solutions for nonlinear nonhomogeneous Robin problems. (English) Zbl 1332.35094 Z. Anal. Anwend. 34, No. 4, 435-458 (2015). Reviewer: Giovanni Anello (Messina) MSC: 35J20 35J60 35B09 PDFBibTeX XMLCite \textit{L. Gasiński} et al., Z. Anal. Anwend. 34, No. 4, 435--458 (2015; Zbl 1332.35094) Full Text: DOI
Papageorgiou, Nikolaos S.; Rădulescu, Vicenţiu D. Combined effects of concave-convex nonlinearities and indefinite potential in some elliptic problems. (English) Zbl 1335.35081 Asymptotic Anal. 93, No. 3, 259-279 (2015). Reviewer: Gabjin Yun (Yongin) MSC: 35J92 35J60 35B32 35J66 PDFBibTeX XMLCite \textit{N. S. Papageorgiou} and \textit{V. D. Rădulescu}, Asymptotic Anal. 93, No. 3, 259--279 (2015; Zbl 1335.35081) Full Text: DOI
Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile Positive solutions for parametric nonlinear periodic problems with competing nonlinearities. (English) Zbl 1318.34037 Electron. J. Differ. Equ. 2015, Paper No. 103, 18 p. (2015). MSC: 34B18 34B15 34C25 34B09 58E50 34C23 PDFBibTeX XMLCite \textit{S. Aizicovici} et al., Electron. J. Differ. Equ. 2015, Paper No. 103, 18 p. (2015; Zbl 1318.34037) Full Text: EMIS
Gasiński, Leszek; O’Regan, Donal; Papageorgiou, Nikolaos S. A variational approach to nonlinear logistic equations. (English) Zbl 1318.35011 Commun. Contemp. Math. 17, No. 3, Article ID 1450021, 37 p. (2015). Reviewer: Petr Tomiczek (Plzeň) MSC: 35J20 35J60 35J92 58E05 35B09 35B38 PDFBibTeX XMLCite \textit{L. Gasiński} et al., Commun. Contemp. Math. 17, No. 3, Article ID 1450021, 37 p. (2015; Zbl 1318.35011) Full Text: DOI
Mugnai, Dimitri; Papageorgiou, Nikolaos Socrates Bifurcation for positive solutions of nonlinear diffusive logistic equations in \(\mathbb R^N\) with indefinite weight. (English) Zbl 1309.35015 Indiana Univ. Math. J. 63, No. 5, 1397-1418 (2014). Reviewer: Vicenţiu D. Rădulescu (Craiova) MSC: 35J20 35J70 35P30 35B09 35B32 PDFBibTeX XMLCite \textit{D. Mugnai} and \textit{N. S. Papageorgiou}, Indiana Univ. Math. J. 63, No. 5, 1397--1418 (2014; Zbl 1309.35015) Full Text: DOI Link
Iannizzotto, Antonio; Papageorgiou, Nikolaos S. Existence, nonexistence and multiplicity of positive solutions for parametric nonlinear elliptic equations. (English) Zbl 1295.35236 Osaka J. Math. 51, No. 1, 179-202 (2014). Reviewer: Michael Jung (Dresden) MSC: 35J92 35J20 35J70 35B09 PDFBibTeX XMLCite \textit{A. Iannizzotto} and \textit{N. S. Papageorgiou}, Osaka J. Math. 51, No. 1, 179--202 (2014; Zbl 1295.35236) Full Text: Euclid
Aizicovici, Sergiu; Papageorgiou, Nikolaos S.; Staicu, Vasile Positive solutions for nonlinear nonhomogeneous periodic eigenvalue problems. (English) Zbl 1274.34031 Ann. Univ. Buchar., Math. Ser. 3(61), No. 2, 129-144 (2012). Reviewer: Ondrej Dosly (Brno) MSC: 34B09 34B15 34B18 58E50 34C10 34L15 PDFBibTeX XMLCite \textit{S. Aizicovici} et al., Ann. Univ. Buchar., Math. Ser. 3(61), No. 2, 129--144 (2012; Zbl 1274.34031)
Kyritsi, Sophia Th.; Papageorgiou, Nikolaos S. A bifurcation-type result for nonlinear Neumann eigenvalue problems. (English) Zbl 1248.35137 Funkc. Ekvacioj, Ser. Int. 55, No. 1, 1-15 (2012). MSC: 35P30 35B32 35B09 35J92 PDFBibTeX XMLCite \textit{S. Th. Kyritsi} and \textit{N. S. Papageorgiou}, Funkc. Ekvacioj, Ser. Int. 55, No. 1, 1--15 (2012; Zbl 1248.35137) Full Text: DOI
Iannizzotto, Antonio; Papageorgiou, Nikolaos S. Positive solutions for generalized nonlinear logistic equations of superdiffusive type. (English) Zbl 1246.35076 Topol. Methods Nonlinear Anal. 38, No. 1, 95-113 (2011). Reviewer: Chun-Lei Tang (Chongqing) MSC: 35J20 35B09 35B51 PDFBibTeX XMLCite \textit{A. Iannizzotto} and \textit{N. S. Papageorgiou}, Topol. Methods Nonlinear Anal. 38, No. 1, 95--113 (2011; Zbl 1246.35076)
Kyritsi, Sophia Th.; Papageorgiou, Nikolaos S. A bifurcation theorem for the \(p\)-logistic equation. (English) Zbl 1217.35020 Appl. Math. Comput. 217, No. 18, 7504-7508 (2011). MSC: 35B32 35J92 35J25 35J20 PDFBibTeX XMLCite \textit{S. Th. Kyritsi} and \textit{N. S. Papageorgiou}, Appl. Math. Comput. 217, No. 18, 7504--7508 (2011; Zbl 1217.35020) Full Text: DOI
Hu, Shouchuan; Papageorgiou, Nikolaos S. Multiplicity of solutions for parametric \(p\)-Laplacian equations with nonlinearity concave near the origin. (English) Zbl 1208.35050 Tohoku Math. J. (2) 62, No. 1, 137-162 (2010). Reviewer: Fabio Paronetto (Padova) MSC: 35J60 35J20 35J70 35J92 35B09 35B20 PDFBibTeX XMLCite \textit{S. Hu} and \textit{N. S. Papageorgiou}, Tôhoku Math. J. (2) 62, No. 1, 137--162 (2010; Zbl 1208.35050) Full Text: DOI
Filippakis, Michael; Kristály, Alexandru; Papageorgiou, Nikolaos S. Existence of five nonzero solutions with exact sign for a \(p\)-Laplacian equation. (English) Zbl 1169.35024 Discrete Contin. Dyn. Syst. 24, No. 2, 405-440 (2009). Reviewer: Dian K. Palagachev (Bari) MSC: 35J60 35J20 35J65 58J70 PDFBibTeX XMLCite \textit{M. Filippakis} et al., Discrete Contin. Dyn. Syst. 24, No. 2, 405--440 (2009; Zbl 1169.35024) Full Text: DOI
Filippakis, Michael E.; Papageorgiou, Nikolaos S.; Staicu, Vasile Positive solutions for nonlinear periodic problems. (English) Zbl 1169.34013 Positivity 12, No. 4, 733-750 (2008). Reviewer: Irena Rachůnková (Olomouc) MSC: 34B18 34B15 34C25 34A60 PDFBibTeX XMLCite \textit{M. E. Filippakis} et al., Positivity 12, No. 4, 733--750 (2008; Zbl 1169.34013) Full Text: DOI
Hu, Shouchuan; Papageorgiou, Nikolaos S. Pairs of solutions of constant sign for nonlinear periodic equations with unbounded nonlinearity. (English) Zbl 1172.34311 Bull. Belg. Math. Soc. - Simon Stevin 12, No. 2, 193-208 (2005). MSC: 34B18 34C25 PDFBibTeX XMLCite \textit{S. Hu} and \textit{N. S. Papageorgiou}, Bull. Belg. Math. Soc. - Simon Stevin 12, No. 2, 193--208 (2005; Zbl 1172.34311) Full Text: Euclid
Filippakis, Michael; Gasiński, Leszek; Papageorgiou, Nikolaos S. On the existence of positive solutions for hemivariational inequalities driven by the \(p\)-Laplacian. (English) Zbl 1330.35180 J. Glob. Optim. 31, No. 1, 173-189 (2005). MSC: 35J86 35J65 35R70 49J40 PDFBibTeX XMLCite \textit{M. Filippakis} et al., J. Glob. Optim. 31, No. 1, 173--189 (2005; Zbl 1330.35180) Full Text: DOI
Kyritsi, Sophia Th.; Papageorgiou, Nikolaos S. Nonsmooth critical point theory on closed convex sets and nonlinear hemivariational inequalities. (English) Zbl 1067.49005 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 61, No. 3, 373-403 (2005). Reviewer: Dumitru Motreanu (Perpignan) MSC: 49J40 35J20 35R70 PDFBibTeX XMLCite \textit{S. Th. Kyritsi} and \textit{N. S. Papageorgiou}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 61, No. 3, 373--403 (2005; Zbl 1067.49005) Full Text: DOI