Agarwal, Ravi P.; Balaj, Mircea; O’Regan, Donal Weak KKM set-valued mappings in hyperconvex metric spaces. (English) Zbl 1499.54147 Filomat 35, No. 1, 157-167 (2021). MSC: 54H25 54E40 54C60 52A01 PDFBibTeX XMLCite \textit{R. P. Agarwal} et al., Filomat 35, No. 1, 157--167 (2021; Zbl 1499.54147) Full Text: DOI
Bouafia, Dahmane; Moussaoui, Toufik; O’Regan, Donal Multiplicity of positive solutions for second order quasilinear equations. (English) Zbl 1474.35019 Math. Bohem. 145, No. 1, 93-112 (2020). MSC: 35A15 35B38 30E25 58E30 49K35 PDFBibTeX XMLCite \textit{D. Bouafia} et al., Math. Bohem. 145, No. 1, 93--112 (2020; Zbl 1474.35019) Full Text: DOI
Agarwal, Ravi P.; Balaj, Mircea; O’Regan, Donal Intersection theorems for weak \(KKM\) set-valued mappings in the finite dimensional setting. (English) Zbl 1440.47046 Topology Appl. 262, 64-79 (2019). Reviewer: Alfred Göpfert (Leipzig) MSC: 47J05 47H04 49J53 PDFBibTeX XMLCite \textit{R. P. Agarwal} et al., Topology Appl. 262, 64--79 (2019; Zbl 1440.47046) Full Text: DOI
Agarwal, Ravi P.; Balaj, Mircea; O’Regan, Donal Intersection theorems with applications in optimization. (English) Zbl 1440.47045 J. Optim. Theory Appl. 179, No. 3, 761-777 (2018). Reviewer: Alfred Göpfert (Leipzig) MSC: 47J05 47H04 49J53 47N10 PDFBibTeX XMLCite \textit{R. P. Agarwal} et al., J. Optim. Theory Appl. 179, No. 3, 761--777 (2018; Zbl 1440.47045) Full Text: DOI
O’Regan, Donal; Shahzad, Naseer Quasi-variational inequalities, coincidence and collectively fixed points results for \({\mathfrak A}_c^\kappa\) maps,. (English) Zbl 1136.47042 Adv. Nonlinear Var. Inequal. 10, No. 2, 1-20 (2007). Reviewer: Valerii V. Obukhovskij (Voronezh) MSC: 47J20 47H10 47H04 47H09 49K35 54H25 PDFBibTeX XMLCite \textit{D. O'Regan} and \textit{N. Shahzad}, Adv. Nonlinear Var. Inequal. 10, No. 2, 1--20 (2007; Zbl 1136.47042)
O’Regan, Donal; Shahzad, Naseer; Agarwal, Ravi P. Quasi-variational and minimax inequalities and collectively fixed point results for \(S\)-KKM maps. (English) Zbl 1099.47045 Bull. Korean Math. Soc. 42, No. 4, 739-756 (2005). Reviewer: Rita Pini (Milano) MSC: 47H10 47J20 49J40 47N10 PDFBibTeX XMLCite \textit{D. O'Regan} et al., Bull. Korean Math. Soc. 42, No. 4, 739--756 (2005; Zbl 1099.47045) Full Text: DOI
Agarwal, R. P.; O’Regan, D. Variational inequalities, coincidence theory, and minimax inequalities. (English) Zbl 0998.47043 Appl. Math. Lett. 14, No. 8, 989-996 (2001). Reviewer: Rita Pini (Milano) MSC: 47J20 47H10 49J40 PDFBibTeX XMLCite \textit{R. P. Agarwal} and \textit{D. O'Regan}, Appl. Math. Lett. 14, No. 8, 989--996 (2001; Zbl 0998.47043) Full Text: DOI
O’Regan, Donal Analytic alternatives and minimax inequalities. (English) Zbl 0965.47048 Nonlinear Stud. 6, No. 1, 11-20 (1999). Reviewer: S.P.Singh (St.John’s) MSC: 47J20 47H10 49J35 49J40 54H25 PDFBibTeX XMLCite \textit{D. O'Regan}, Nonlinear Stud. 6, No. 1, 11--20 (1999; Zbl 0965.47048)