Vo Viet Tri; O’regan, Donal Common fixed point theorems for multivalued mappings via cone-valued measure of noncompactness. (English) Zbl 07781966 Fixed Point Theory 23, No. 2, 729-740 (2022). MSC: 47H10 54H25 PDFBibTeX XMLCite \textit{Vo Viet Tri} and \textit{D. O'regan}, Fixed Point Theory 23, No. 2, 729--740 (2022; Zbl 07781966) Full Text: DOI
Amar, Afif Ben; Garbout, Hajer; O’Regan, Donal Surjectivity results for nonlinear weakly sequentially continuous operators and applications. (English) Zbl 1482.47092 Fixed Point Theory 22, No. 2, 481-494 (2021). MSC: 47H08 47H10 47H30 PDFBibTeX XMLCite \textit{A. B. Amar} et al., Fixed Point Theory 22, No. 2, 481--494 (2021; Zbl 1482.47092) Full Text: Link
O’Regan, Donal Essential weakly Mönch type maps and continuation theory. (English) Zbl 1516.54043 Fixed Point Theory 22, No. 2, 779-784 (2021). Reviewer: Radu Precup (Cluj-Napoca) MSC: 54H25 54C60 54C10 55M20 PDFBibTeX XMLCite \textit{D. O'Regan}, Fixed Point Theory 22, No. 2, 779--784 (2021; Zbl 1516.54043) Full Text: Link
Agarwal, Ravi; O’Regan, Donal; Soori, Ebrahim Existence of group nonexpansive retractions and ergodic theorems in topological groups. (English) Zbl 1489.47084 Fixed Point Theory 22, No. 2, 455-464 (2021). Reviewer: Adriana Buică (Cluj-Napoca) MSC: 47H25 47H09 PDFBibTeX XMLCite \textit{R. Agarwal} et al., Fixed Point Theory 22, No. 2, 455--464 (2021; Zbl 1489.47084) Full Text: arXiv Link
O’Regan, Donal Generalized Leray-Schauder nonlinear alternatives for general classes of maps. (English) Zbl 1470.54094 Fixed Point Theory 22, No. 1, 299-314 (2021). MSC: 54H25 54C60 55M20 47H10 PDFBibTeX XMLCite \textit{D. O'Regan}, Fixed Point Theory 22, No. 1, 299--314 (2021; Zbl 1470.54094) Full Text: Link
Tian, Jingfeng; Hu, Ximei; O’Regan, Donal On \(\psi \)-contractions and common fixed point results in probabilistic metric spaces. (English) Zbl 1454.54036 Fixed Point Theory 21, No. 1, 319-338 (2020). Reviewer: Salvatore Sessa (Napoli) MSC: 54H25 47H10 54E70 PDFBibTeX XMLCite \textit{J. Tian} et al., Fixed Point Theory 21, No. 1, 319--338 (2020; Zbl 1454.54036) Full Text: Link
O’Regan, Donal Generalized \(\Phi\)-epi maps and topological coincidence principles. (English) Zbl 07262289 Fixed Point Theory 20, No. 2, 581-590 (2019). MSC: 47H10 54H25 PDFBibTeX XMLCite \textit{D. O'Regan}, Fixed Point Theory 20, No. 2, 581--590 (2019; Zbl 07262289) Full Text: Link
Krichen, Bilel; Mefteh, Bilel; O’Regan, Donal Fixed point theorems involving 1-set-weakly contractive operators in WC-Banach algebras. (English) Zbl 07262286 Fixed Point Theory 20, No. 2, 541-558 (2019). MSC: 47A10 47A55 47A53 47H10 PDFBibTeX XMLCite \textit{B. Krichen} et al., Fixed Point Theory 20, No. 2, 541--558 (2019; Zbl 07262286) Full Text: Link
Faraji, Hamid; Nourouzi, Kourosh; O’Regan, Donal A fixed point theorem in uniform spaces generated by a family of \(b\)-pseudometrics. (English) Zbl 1489.54116 Fixed Point Theory 20, No. 1, 177-184 (2019). MSC: 54H25 54E15 PDFBibTeX XMLCite \textit{H. Faraji} et al., Fixed Point Theory 20, No. 1, 177--184 (2019; Zbl 1489.54116) Full Text: DOI
Xu, Jiafa; O’Regan, Donal; Zhang, Keyu Positive solutions for a system of \(p\)-Laplacian boundary value problems. (English) Zbl 1400.34039 Fixed Point Theory 19, No. 2, 823-836 (2018). MSC: 34B18 47N20 PDFBibTeX XMLCite \textit{J. Xu} et al., Fixed Point Theory 19, No. 2, 823--836 (2018; Zbl 1400.34039)
Krichen, Bilel; O’Regan, Donal On the class of relatively weakly demicompact nonlinear operators. (English) Zbl 1455.58005 Fixed Point Theory 19, No. 2, 625-630 (2018). MSC: 58C07 47H04 PDFBibTeX XMLCite \textit{B. Krichen} and \textit{D. O'Regan}, Fixed Point Theory 19, No. 2, 625--630 (2018; Zbl 1455.58005)
Hosseini, Meraj; Nourouzi, Kourosh; O’Regan, Donal Stationary points of set-valued contractive and nonexpansive mappings on ultrametric spaces. (English) Zbl 1460.54044 Fixed Point Theory 19, No. 2, 587-594 (2018). MSC: 54H25 54C60 54E40 PDFBibTeX XMLCite \textit{M. Hosseini} et al., Fixed Point Theory 19, No. 2, 587--594 (2018; Zbl 1460.54044) Full Text: DOI
Cardinali, T.; O’Regan, D.; Rubbioni, P. Mönch sets and fixed point theorems for multimaps in locally convex topological vector spaces. (English) Zbl 1478.47049 Fixed Point Theory 18, No. 1, 147-154 (2017). MSC: 47H10 47H08 47H04 PDFBibTeX XMLCite \textit{T. Cardinali} et al., Fixed Point Theory 18, No. 1, 147--154 (2017; Zbl 1478.47049) Full Text: DOI Link Link
Amar, Afif Ben; O’Regan, Donal Measures of weak noncompactness and fixed point theory in Banach algebras satisfying condition \((\mathcal{P})\). (English) Zbl 1454.47055 Fixed Point Theory 18, No. 1, 37-46 (2017). Reviewer: Dariusz Bugajewski (Poznań) MSC: 47H08 47H09 47H10 PDFBibTeX XMLCite \textit{A. B. Amar} and \textit{D. O'Regan}, Fixed Point Theory 18, No. 1, 37--46 (2017; Zbl 1454.47055) Full Text: DOI
Bazazi, Faezeh; Nourouzi, Kourosh; O’Regan, Donal Two order theoretic proofs for a fixed point theorem in partially ordered metric spaces and its application to trace class operator equations. (English) Zbl 1386.54019 Fixed Point Theory 15, No. 2, 393-398 (2014). MSC: 54H25 54E40 54F05 39B42 47B10 PDFBibTeX XMLCite \textit{F. Bazazi} et al., Fixed Point Theory 15, No. 2, 393--398 (2014; Zbl 1386.54019) Full Text: Link
O’Regan, Donal On the existence of connected sets of solutions for nonlinear operators. (English) Zbl 1321.47119 Fixed Point Theory 15, No. 1, 189-198 (2014). Reviewer: Grzegorz Gabor (Toruń) MSC: 47H10 47H04 PDFBibTeX XMLCite \textit{D. O'Regan}, Fixed Point Theory 15, No. 1, 189--198 (2014; Zbl 1321.47119) Full Text: Link
Agarwal, Ravi P.; O’Regan, Donal; Taoudi, Mohamed-Aziz Fixed point theorems for condensing multivalued mappings under weak topology features. (English) Zbl 1253.47036 Fixed Point Theory 12, No. 2, 247-254 (2011). Reviewer: Dorota Gabor (Toruń) MSC: 47H10 47H04 47H08 47H14 PDFBibTeX XMLCite \textit{R. P. Agarwal} et al., Fixed Point Theory 12, No. 2, 247--254 (2011; Zbl 1253.47036) Full Text: Link
O’Regan, D. Fixed point theory in generalized approximate neighborhood extension spaces. (English) Zbl 1267.54051 Fixed Point Theory 12, No. 1, 155-164 (2011). Reviewer: Gabriela Petruşel (Cluj-Napoca) MSC: 54H25 54C55 54D35 PDFBibTeX XMLCite \textit{D. O'Regan}, Fixed Point Theory 12, No. 1, 155--164 (2011; Zbl 1267.54051) Full Text: Link
O’Regan, Donal Fixed points for compact permissible maps in extension type spaces. (English) Zbl 1225.47069 Fixed Point Theory 11, No. 1, 107-112 (2010). Reviewer: Nicoleta Negoescu (Iaşi) MSC: 47H10 54H25 PDFBibTeX XMLCite \textit{D. O'Regan}, Fixed Point Theory 11, No. 1, 107--112 (2010; Zbl 1225.47069)
Ješić, Siniša N.; Babačev, Nataša A.; O’Regan, Donal; Nikolić, Rale M. Common fixed point theorems for four mappings defined on \(\mathcal L\)-fuzzy metric spaces with nonlinear contractive type condition. (English) Zbl 1213.47071 Fixed Point Theory 10, No. 2, 259-274 (2009). Reviewer: Huseyin Cakalli (Istanbul) MSC: 47S40 47H10 54H25 PDFBibTeX XMLCite \textit{S. N. Ješić} et al., Fixed Point Theory 10, No. 2, 259--274 (2009; Zbl 1213.47071)
O’Regan, Donal; Petruşel, Adrian Leray-Schauder, Lefschetz and Krasnoselskii fixed point theory in Fréchet spaces for general classes of Volterra operators. (English) Zbl 1179.47049 Fixed Point Theory 9, No. 2, 497-513 (2008). Reviewer: Mihai Turinici (Iaşi) MSC: 47H10 54H25 PDFBibTeX XMLCite \textit{D. O'Regan} and \textit{A. Petruşel}, Fixed Point Theory 9, No. 2, 497--513 (2008; Zbl 1179.47049)
Ma, Ruyun; O’Regan, Donal; Precup, Radu Fixed point theory for admissible pairs and maps in Fréchet spaces via degree theory. (English) Zbl 1147.47042 Fixed Point Theory 8, No. 2, 273-283 (2007). Reviewer: Marco Spadini (Firenze) MSC: 47H10 54H25 47H11 47H04 PDFBibTeX XMLCite \textit{R. Ma} et al., Fixed Point Theory 8, No. 2, 273--283 (2007; Zbl 1147.47042)
O’Regan, Donal; Precup, Radu Aronszajn type theorems for integral equations on unbounded domains via maximal solutions. (English) Zbl 1119.45003 Fixed Point Theory 7, No. 2, 305-313 (2006). Reviewer: J. Banaś (Rzeszów) MSC: 45G15 PDFBibTeX XMLCite \textit{D. O'Regan} and \textit{R. Precup}, Fixed Point Theory 7, No. 2, 305--313 (2006; Zbl 1119.45003)
Agarwal, Ravi P.; O’Regan, Donal Lefschetz fixed point theorems for compact morphisms. (English) Zbl 1113.54026 Fixed Point Theory 7, No. 2, 175-190 (2006). MSC: 54H25 47H10 PDFBibTeX XMLCite \textit{R. P. Agarwal} and \textit{D. O'Regan}, Fixed Point Theory 7, No. 2, 175--190 (2006; Zbl 1113.54026)
Ma, Ruyun; O’Regan, Donal Positive solutions of singular sublinear second-order three-point boundary value problems. (English) Zbl 1110.34017 Fixed Point Theory 7, No. 1, 65-81 (2006). MSC: 34B18 34B10 34B16 PDFBibTeX XMLCite \textit{R. Ma} and \textit{D. O'Regan}, Fixed Point Theory 7, No. 1, 65--81 (2006; Zbl 1110.34017)
Barroso, Cleon S.; O’Regan, Donal Measure of weak compactness and fixed point theory. (English) Zbl 1118.47042 Fixed Point Theory 6, No. 2, 247-255 (2005). Reviewer: Bhavana Deshpande (Ratlam) MSC: 47H09 47H10 45N05 PDFBibTeX XMLCite \textit{C. S. Barroso} and \textit{D. O'Regan}, Fixed Point Theory 6, No. 2, 247--255 (2005; Zbl 1118.47042) Full Text: arXiv
O’Regan, Donal A note on Leray-Schauder alternatives for the decomposable maps of Bader. (English) Zbl 1056.47043 Fixed Point Theory 5, No. 1, 97-102 (2004). Reviewer: Jarosław Górnicki (Rzeszów) MSC: 47H10 54H25 47H11 PDFBibTeX XMLCite \textit{D. O'Regan}, Fixed Point Theory 5, No. 1, 97--102 (2004; Zbl 1056.47043)