Ghadampour, Mostafa; Soori, Ebrahim; Agarwal, Ravi P.; O’Regan, Donal Strong convergence theorem obtained by a generalized projections method for solving an equilibrium problem and fixed point problems. (English) Zbl 07729086 Numer. Funct. Anal. Optim. 44, No. 11, 1153-1174 (2023). MSC: 47H09 47H10 PDFBibTeX XMLCite \textit{M. Ghadampour} et al., Numer. Funct. Anal. Optim. 44, No. 11, 1153--1174 (2023; Zbl 07729086) Full Text: DOI
Wang, JinRong; Liu, Xianghu; O’Regan, D. On the approximate controllability for Hilfer fractional evolution hemivariational inequalities. (English) Zbl 1412.34193 Numer. Funct. Anal. Optim. 40, No. 7, 743-762 (2019). MSC: 34G25 34A08 34A37 47N20 34H05 93B05 49J40 PDFBibTeX XMLCite \textit{J. Wang} et al., Numer. Funct. Anal. Optim. 40, No. 7, 743--762 (2019; Zbl 1412.34193) Full Text: DOI
Agarwal, Ravi P.; O’Regan, Donal; Wong, Patricia J. Y. Constant-sign solutions of a system of Urysohn integral equations. (English) Zbl 1181.45018 Numer. Funct. Anal. Optim. 29, No. 11-12, 1205-1239 (2008). Reviewer: Jürgen Appell (Würzburg) MSC: 45G15 45M20 45C05 PDFBibTeX XMLCite \textit{R. P. Agarwal} et al., Numer. Funct. Anal. Optim. 29, No. 11--12, 1205--1239 (2008; Zbl 1181.45018) Full Text: DOI
Ntouyas, S. K.; O’Regan, D. Existence results on semi-infinite intervals for nonlocal evolutions equations and inclusions via semigroup theory. (English) Zbl 1152.34039 Numer. Funct. Anal. Optim. 29, No. 3-4, 419-444 (2008). Reviewer: Marlène Frigon (Montréal) MSC: 34G25 34A12 93B05 47N20 PDFBibTeX XMLCite \textit{S. K. Ntouyas} and \textit{D. O'Regan}, Numer. Funct. Anal. Optim. 29, No. 3--4, 419--444 (2008; Zbl 1152.34039) Full Text: DOI
Górniewicz, L.; Ntouyas, S. K.; O’Regan, D. Existence and controllability results for first-and second-order functional semilinear differential inclusions with nonlocal conditions. (English) Zbl 1123.34061 Numer. Funct. Anal. Optimization 28, No. 1-2, 53-82 (2007). Reviewer: Khalil Ezzinbi (Marrakech) MSC: 34K30 34K35 PDFBibTeX XMLCite \textit{L. Górniewicz} et al., Numer. Funct. Anal. Optim. 28, No. 1--2, 53--82 (2007; Zbl 1123.34061) Full Text: DOI
O’Regan, Donal; Shahzad, Naseer Invariant approximations for generalized \(I\)-contractions. (English) Zbl 1084.41023 Numer. Funct. Anal. Optimization 26, No. 4-5, 565-575 (2005). Reviewer: Victor Milman (Minsk) MSC: 41A50 47H10 54H25 PDFBibTeX XMLCite \textit{D. O'Regan} and \textit{N. Shahzad}, Numer. Funct. Anal. Optim. 26, No. 4--5, 565--575 (2005; Zbl 1084.41023) Full Text: DOI
O’Regan, Donal Nonlinear operator approximation theory. (English) Zbl 0911.47044 Numer. Funct. Anal. Optimization 19, No. 5-6, 587-592 (1998). Reviewer: J.Appell (Würzburg) MSC: 47H04 47J05 47H30 PDFBibTeX XMLCite \textit{D. O'Regan}, Numer. Funct. Anal. Optim. 19, No. 5--6, 587--592 (1998; Zbl 0911.47044) Full Text: DOI EuDML