# zbMATH — the first resource for mathematics

## O’Regan, Donal

Compute Distance To:
 Author ID: oregan.donal Published as: O’Regan, D.; O’Regan, Daniel J.; O’Regan, Donal; O’Regan, Donald; O’Regan, Dónal; O’regan, D.; O’regan, Donal Homepage: http://www.maths.nuigalway.ie/staff/doregan.shtml External Links: Math-Net.Ru · dblp · GND
 Documents Indexed: 1,412 Publications since 1986, including 32 Books Reviewing Activity: 38 Reviews
all top 5

#### Co-Authors

 238 single-authored 621 Agarwal, Ravi P. 50 Jiang, Daqing 43 Saker, Samir H. 40 Khristova, Snezhana G. 39 Grace, Said Rezk 38 Wang, Jinrong 29 Lu, Haishen 28 Wong, Patricia J. Y. 25 Papageorgiou, Nikolaos S. 24 Yan, Baoqiang 23 Meehan, Maria 22 Staněk, Svatoslav 21 Lakshmikantham, Vangipuram 20 Lupulescu, Vasile 19 El-Gebeily, Mohamed A. 19 Hernández, Eduardo M. 19 Shahzad, Naseer 19 Xu, Jiafa 18 Chen, Yuqing 17 Frigon, Marlène 17 Precup, Radu 14 Balaj, Mircea 14 Guo, Chengjun 14 Huang, Nan-Jing 14 Ntouyas, Sotiris K. 14 Saadati, Reza 13 Cho, Yeol Je 13 Chu, Jifeng 13 Wang, Chao 12 Amini-Harandi, Alireza 12 Buşe, Constantin 12 Franco, Daniel H. T. 12 Nguyen Huy Tuan 12 Xu, Xian 11 Farajzadeh, Ali P. 11 Filippakis, Michael E. 11 Nieto Roig, Juan Jose 11 Perera, Kanishka 11 Zu, Li 10 Samet, Bessem 9 Bohner, Martin J. 9 Bonanno, Gabriele 9 Dshalalow, Jewgeni H. 9 Moussaoui, Toufik 9 Taoudi, Mohamed Aziz 8 Ben Amar, Afif 8 Bobisud, Larry E. 8 Górniewicz, Lech 8 Ibrahim, Ahmed Gamal 8 Jleli, Mohamed 8 Karapınar, Erdal 8 Li, Xiaodi 8 Liu, Yansheng 7 Băleanu, Dumitru I. 7 Banaś, Józef 7 Henderson, Johnny Lee 7 Lee, John Walter 7 Mustafa, Octavian G. 7 Nourouzi, Kourosh 7 Orpel, Aleksandra 7 Xu, Yuantong 7 Zhou, Yong 6 Avery, Richard I. 6 Chen, Jinhai 6 Fečkan, Michal 6 Kyritsi, Sophia Th. 6 Ma, Ruyun 6 Perán, Juan 6 Pierri, Michelle 6 Saierli, Olivia 6 Xu, Xiaojie 6 Yuan, Chengjun 6 Zhang, Keyu 5 Heidarkhani, Shapour 5 Kelevedjiev, Petio S. 5 Li, Mengmeng 5 Osman, Mahmoud M. 5 Petruşel, Adrian 5 Rahman, Ghaus Ur 5 Sahu, Daya Ram 5 Shakhmurov, Veli B. 5 Wang, Fulong 5 Yang, Zhilin 4 Arshad, Sadia 4 Dhage, Bapurao Chandra 4 Dong, Wei 4 Fu, Zhengqing 4 Kim, Jong Kyu 4 Kopanov, Peter 4 Leela, Srinivasa G. 4 Li, Xuesong 4 Royalty, W. D. 4 Sadarangani, Kishin B. 4 Wang, Haiyan 4 Xia, Yonghui 4 Younus, Awais 3 Afrouzi, Ghasem Alizadeh 3 Agarwal, R. B. 3 Aghajani, Asadollah 3 Alsulami, Hamed Hamdan ...and 299 more Co-Authors
all top 5

#### Serials

 60 Applicable Analysis 55 Journal of Mathematical Analysis and Applications 48 Dynamic Systems and Applications 47 Applied Mathematics Letters 44 Applied Mathematics and Computation 32 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 31 Computers & Mathematics with Applications 27 Mathematical and Computer Modelling 27 Dynamics of Continuous, Discrete & Impulsive Systems. Series A. Mathematical Analysis 25 Advances in Difference Equations 23 Proceedings of the American Mathematical Society 22 Communications in Applied Analysis 22 Fixed Point Theory 21 Nonlinear Analysis. Theory, Methods & Applications 20 Journal of Computational and Applied Mathematics 18 Electronic Journal of Differential Equations (EJDE) 18 Nonlinear Analysis Forum 18 Fixed Point Theory and Applications 17 Nonlinear Functional Analysis and Applications 14 Topological Methods in Nonlinear Analysis 14 Mathematical Inequalities & Applications 14 Journal of Nonlinear and Convex Analysis 13 Zeitschrift für Analysis und ihre Anwendungen 13 Journal of Applied Mathematics and Stochastic Analysis 13 Memoirs on Differential Equations and Mathematical Physics 12 Bulletin of the Australian Mathematical Society 12 Mathematical Methods in the Applied Sciences 12 Acta Applicandae Mathematicae 12 Journal of Applied Mathematics and Computing 11 Journal of Differential Equations 11 Mathematische Nachrichten 11 Journal of Inequalities and Applications 11 Communications in Nonlinear Science and Numerical Simulation 11 Journal of Fixed Point Theory and Applications 10 Rocky Mountain Journal of Mathematics 10 Journal of Integral Equations and Applications 10 Aequationes Mathematicae 10 Cubo 10 Boundary Value Problems 9 Glasgow Mathematical Journal 9 Georgian Mathematical Journal 9 Nonlinear Studies 9 Positivity 9 Nonlinear Analysis. Real World Applications 9 Differential Equations and Applications 8 Proceedings of the Edinburgh Mathematical Society. Series II 8 Journal of Difference Equations and Applications 8 Abstract and Applied Analysis 8 Journal of Nonlinear Science and Applications 7 Annales Polonici Mathematici 7 Archivum Mathematicum 7 Bulletin of the Iranian Mathematical Society 7 Proceedings of the Royal Irish Academy. Section A, Mathematical and Physical Sciences 7 Fractional Calculus & Applied Analysis 7 Mathematical Proceedings of the Royal Irish Academy 6 Journal of the Franklin Institute 6 Czechoslovak Mathematical Journal 6 Journal of Optimization Theory and Applications 6 Monatshefte für Mathematik 6 Numerical Functional Analysis and Optimization 6 Rendiconti del Circolo Matemàtico di Palermo. Serie II 6 Bulletin of the Korean Mathematical Society 6 Panamerican Mathematical Journal 6 Functional Differential Equations 6 Electronic Journal of Qualitative Theory of Differential Equations 6 Acta Mathematica Sinica. English Series 5 Archiv der Mathematik 5 Fuzzy Sets and Systems 5 Mathematica Slovaca 5 Utilitas Mathematica 5 Topology and its Applications 5 Annales Societatis Mathematicae Polonae. Seria I. Commentationes Mathematicae 5 Applications of Mathematics 5 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics 5 Analele Ştiinţifice ale Universităţii “Ovidius” Constanţa. Seria: Matematică 5 Differential Equations and Dynamical Systems 5 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 4 IMA Journal of Applied Mathematics 4 Demonstratio Mathematica 4 Indian Journal of Mathematics 4 Results in Mathematics 4 Stochastic Analysis and Applications 4 Acta Mathematica Hungarica 4 Bulletin des Sciences Mathématiques 4 Communications on Applied Nonlinear Analysis 4 Mathematical Problems in Engineering 4 Journal of Applied Analysis 4 Taiwanese Journal of Mathematics 4 Neliniĭni Kolyvannya 4 Differential Equations 4 Journal of Applied Mathematics 4 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 3 Commentationes Mathematicae Universitatis Carolinae 3 International Journal of Mathematics and Mathematical Sciences 3 Journal of the Korean Mathematical Society 3 Mathematika 3 Proceedings of the Indian Academy of Sciences. Mathematical Sciences 3 Bulletin of the Belgian Mathematical Society - Simon Stevin 3 Methods and Applications of Analysis 3 Discrete and Continuous Dynamical Systems ...and 144 more Serials
all top 5

#### Fields

 707 Ordinary differential equations (34-XX) 544 Operator theory (47-XX) 192 General topology (54-XX) 150 Integral equations (45-XX) 110 Partial differential equations (35-XX) 105 Difference and functional equations (39-XX) 75 Real functions (26-XX) 53 Calculus of variations and optimal control; optimization (49-XX) 53 Global analysis, analysis on manifolds (58-XX) 40 Systems theory; control (93-XX) 36 Algebraic topology (55-XX) 35 Functional analysis (46-XX) 32 Biology and other natural sciences (92-XX) 27 Probability theory and stochastic processes (60-XX) 20 Numerical analysis (65-XX) 16 Dynamical systems and ergodic theory (37-XX) 13 General and overarching topics; collections (00-XX) 9 Operations research, mathematical programming (90-XX) 8 Approximations and expansions (41-XX) 8 Mechanics of deformable solids (74-XX) 8 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 7 Fluid mechanics (76-XX) 6 Functions of a complex variable (30-XX) 5 Special functions (33-XX) 5 Abstract harmonic analysis (43-XX) 3 Computer science (68-XX) 2 Linear and multilinear algebra; matrix theory (15-XX) 2 Measure and integration (28-XX) 2 Potential theory (31-XX) 2 Harmonic analysis on Euclidean spaces (42-XX) 2 Quantum theory (81-XX) 2 Information and communication theory, circuits (94-XX) 1 Mathematical logic and foundations (03-XX) 1 Field theory and polynomials (12-XX) 1 Sequences, series, summability (40-XX) 1 Integral transforms, operational calculus (44-XX) 1 Convex and discrete geometry (52-XX) 1 Differential geometry (53-XX) 1 Statistics (62-XX)

#### Citations contained in zbMATH

1,016 Publications have been cited 10,590 times in 6,457 Documents Cited by Year
Variational approach to impulsive differential equations. Zbl 1167.34318
Nieto, Juan J.; O’Regan, Donal
2009
Dynamic equations on time scales: A survey. Zbl 1020.39008
Agarwal, Ravi; Bohner, Martin; O’Regan, Donal; Peterson, Allan
2002
Generalized contractions in partially ordered metric spaces. Zbl 1140.47042
Agarwal, Ravi P.; El-Gebeily, M. A.; O’Regan, Donal
2008
Positive solutions of differential, difference and integral equations. Zbl 1157.34301
Agarwal, Ravi P.; O’Regan, Donal; Wong, Patricia J. Y.
1999
Fixed point theorems for generalized contractions in ordered metric spaces. Zbl 1142.47033
2008
Fixed point theory and applications. Zbl 0960.54027
Agarwal, Ravi P.; Meehan, Maria; O’Regan, Donal
2001
Positive solutions for Dirichlet problems of singular nonlinear fractional differential equations. Zbl 1206.34009
Agarwal, Ravi P.; O’Regan, Donal; Staněk, Svatoslav
2010
Oscillation theory for difference and functional differential equations. Zbl 0954.34002
Agarwal, Ravi P.; Grace, Said R.; O’Regan, Donal
2000
Iterative construction of fixed points of nearly asymptotically nonexpansive mappings. Zbl 1134.47047
Agarwal, R. P.; O’Regan, Donal; Sahu, D. R.
2007
Infinite interval problems for differential, difference and integral equations. Zbl 0988.34002
Agarwal, Ravi P.; O’Regan, Donal
2001
Multiple positive solutions of singular and nonsingular discrete problems via variational methods. Zbl 1070.39005
Agarwal, Ravi P.; Perera, Kanishka; O’Regan, Donal
2004
On a new class of abstract impulsive differential equations. Zbl 1266.34101
Hernández, Eduardo; O’Regan, Donal
2013
Positive solutions to certain classes of singular nonlinear second order boundary value problems. Zbl 0808.34022
O’Regan, D.
1994
Fixed point theory for Lipschitzian-type mappings with applications. Zbl 1176.47037
Agarwal, Ravi P.; O’Regan, Donal; Sahu, D. R.
2009
On recent developments in the theory of abstract differential equations with fractional derivatives. Zbl 1229.34004
Hernández, Eduardo; O’Regan, Donal; Balachandran, Krishnan
2010
Oscillation theory for second order linear, half-linear, superlinear and sublinear dynamic equations. Zbl 1073.34002
Agarwal, Ravi P.; Grace, Said R.; O’Regan, Donal
2002
Multiple positive solutions of singular discrete $$p$$-Laplacian problems via variational methods. Zbl 1098.39001
Agarwal, Ravi P.; Perera, Kanishka; O’Regan, Donal
2005
Existence of solutions for semi-linear abstract differential equations with not instantaneous impulses. Zbl 1293.34019
Pierri, Michelle; O’Regan, Donal; Rolnik, Vanessa
2013
Nonlinear boundary value problems on time scales. Zbl 0995.34016
Agarwal, Ravi P.; O’Regan, Donal
2001
Some general existence principles and results for $$(\varphi(y'))=qf(t,y,y'),0<t<1$$. Zbl 0778.34013
O’Regan, Donal
1993
Oscillation criteria for second-order nonlinear neutral delay dynamic equations. Zbl 1062.34068
Agarwal, Ravi P.; O’Regan, Donal; Saker, S. H.
2004
Existence theory for nonlinear ordinary differential equations. Zbl 1077.34505
O’Regan, Donal
1997
Nonlinear superlinear singular and nonsingular second order boundary value problems. Zbl 0902.34015
Agarwal, Ravi P.; O’Regan, Donal
1998
Solvability of some fourth (and higher) order singular boundary value problems. Zbl 0795.34018
O’Regan, Donal
1991
Eigenvalues and the one-dimensional $$p$$-Laplacian. Zbl 1002.34019
Agarwal, Ravi P.; Lü, Haishen; O’Regan, Donal
2002
Multiple nonnegative solutions for second order impulsive differential equations. Zbl 1047.34008
Agarwal, Ravi P.; O’Regan, Donal
2000
Discrete oscillation theory. Zbl 1084.39001
Agarwal, Ravi P.; Bohner, Martin; Grace, Said R.; O’Regan, Donal
2005
Existence principles for nonlinear resonant operator and integral equations. Zbl 0932.45010
Meehan, M.; O’Regan, D.
1998
Anti-periodic solutions for fully nonlinear first-order differential equations. Zbl 1142.34313
Chen, Yuqing; Nieto, Juan J.; O’Regan, Donal
2007
Nonlinear Urysohn discrete equations on the infinite interval: a fixed-point approach. Zbl 1003.39017
Agarwal, R. P.; O’Regan, D.
2001
Singular boundary value problems for superlinear second order ordinary and delay differential equations. Zbl 0863.34022
Agarwal, Ravi P.; O’Regan, Donal
1996
Singular boundary value problems for first and second order impulsive differential equations. Zbl 1073.34025
Agarwal, Ravi P.; Franco, Daniel; O’Regan, Donal
2005
Oscillation theory for second order dynamic equations. Zbl 1043.34032
Agarwal, Ravi P.; Grace, Said R.; O’Regan, Donal
2003
Morse theoretic aspects of $$p$$-Laplacian type operators. Zbl 1192.58007
Perera, Kanishka; Agarwal, Ravi P.; O’Regan, Donal
2010
Solvability of some nonlinear boundary value problems. Zbl 0653.34015
Bobisud, L. E.; O’Regan, D.; Royalty, W. D.
1988
Fractional boundary value problems with singularities in space variables. Zbl 1268.34023
O’Regan, Donal; Staněk, Svatoslav
2013
Existence theory for single and multiple solutions to singular positone boundary value problems. Zbl 0999.34018
Agarwal, Ravi P.; O’Regan, Donal
2001
Fixed-point theory for the sum of two operators. Zbl 0858.34049
O’Regan, D.
1996
The extinction and persistence of the stochastic SIS epidemic model with vaccination. Zbl 1395.92180
Zhao, Yanan; Jiang, Daqing; O’Regan, Donal
2013
Analysis of autonomous Lotka-Volterra competition systems with random perturbation. Zbl 1258.34099
Jiang, Daqing; Ji, Chunyan; Li, Xiaoyue; O’Regan, Donal
2012
Oscillation criteria for certain $$n$$th order differential equations with deviating arguments. Zbl 0997.34060
Agarwal, Ravi P.; Grace, Said R.; O’Regan, Donal
2001
Multiplicity results for singular conjugate, focal, and $$(N,P)$$ problems. Zbl 0978.34018
Agarwal, Ravi P.; O’Regan, Donal
2001
Positive solutions for mixed problems of singular fractional differential equations. Zbl 1232.26005
Agarwal, Ravi P.; O’Regan, Donal; Staněk, Svatoslav
2012
A multiplicity result for second order impulsive differential equations via the Leggett Williams fixed point theorem. Zbl 1070.34042
Agarwal, Ravi P.; O’Regan, Donal
2005
Twin solutions to singular Dirichlet problems. Zbl 0946.34022
Agarwal, Ravi P.; O’Regan, Donal
1999
Boundary value problems for discrete equations. Zbl 0890.39001
Agarwal, R. P.; O’Regan, D.
1997
Multiple positive solutions to superlinear periodic boundary value problems with repulsive singular forces. Zbl 1042.34047
Jiang, Daqing; Chu, Jifeng; O’Regan, Donal; Agarwal, Ravi P.
2003
Initial and boundary value problems for fuzzy differential equations. Zbl 1048.34015
O’Regan, Donal; Lakshmikantham, V.; Nieto, Juan J.
2003
Nonlinear contraction theorems in probabilistic spaces. Zbl 1135.54315
2008
Strong convergence theorems for relatively nonexpansive mappings in Banach spaces with applications. Zbl 1201.65091
Li, Xi; Huang, Nan-Jing; O’Regan, Donal
2010
The oscillation of certain higher-order functional differential equations. Zbl 1070.34083
Agarwal, R. P.; Grace, S. R.; O’Regan, D.
2003
Singular Dirichlet boundary value problems. I: Superlinear and nonresonant case. Zbl 0884.34028
O’Regan, Donal
1997
Theory of singular boundary value problems. Zbl 0807.34028
O’Regan, Donal
1994
First order impulsive initial and periodic problems with variable moments. Zbl 0930.34016
Frigon, M.; O’Regan, D.
1999
A fixed-point approach for nonlinear discrete boundary value problems. Zbl 0933.39004
Agarwal, R. P.; O’Regan, D.
1998
Existence of solutions for first order ordinary differential equations with nonlinear boundary conditions. Zbl 1058.34015
Franco, Daniel; Nieto, Juan J.; O’Regan, Donal
2004
A note on existence of nonnegative solutions to singular semi-positone problems. Zbl 0921.34027
Agarwal, Ravi P.; O’Regan, Donal
1999
Impulsive differential equations with variable times. Zbl 0863.34015
Frigon, Marlène; O’Regan, Donal
1996
A survey of Lyapunov functions, stability and impulsive Caputo fractional differential equations. Zbl 1343.34006
Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal
2016
Fixed-point theory for weakly sequentially continuous mappings. Zbl 1185.34026
O’Regan, D.
1998
Positive solutions for $$(p,n-p)$$ conjugate boundary value problems. Zbl 0920.34027
Agarwal, Ravi P.; O’Regan, Donal
1998
Existence theory for nonlinear integral and integrodifferential equations. Zbl 0905.45003
O’Regan, Donal; Meehan, Maria
1998
Fixed point theorems for singlevalued and multivalued generalized contractions in metric spaces endowed with a graph. Zbl 1227.54053
2011
On existence and local attractivity of solutions of a quadratic Volterra integral equation of fractional order. Zbl 1147.45003
Banaś, Józef; O’Regan, Donal
2008
Fourth-order problems with nonlinear boundary conditions. Zbl 1068.34013
Franco, Daniel; O’Regan, Donal; Perán, Juan
2005
Singular differential and integral equations with applications. Zbl 1055.34001
Agarwal, Ravi P.; O’Regan, Donal
2003
Anti-periodic boundary value problem for nonlinear first order ordinary differential equations. Zbl 1097.34015
Franco, Daniel; Nieto, Juan J.; O’Regan, Donal
2003
Integral inclusions of upper semi-continuous or lower semi-continuous type. Zbl 0860.45007
O’Regan, Donal
1996
Multiple positive solutions to systems of nonlinear semipositone fractional differential equations with coupled boundary conditions. Zbl 1340.34041
Yuan, Chengjun; Jiang, Daqing; O’Regan, D.; Agarwal, Ravi
2012
Fuzzy fractional integral equations under compactness type condition. Zbl 1312.45009
2012
New oscillation criteria for second-order neutral functional dynamic equations via the generalized Riccati substitution. Zbl 1221.34245
Saker, S. H.; O’Regan, Donal
2011
Oscillation of second-order strongly superlinear and strongly sublinear dynamic equations. Zbl 1221.34083
Grace, Said R.; Agarwal, Ravi P.; Bohner, Martin; O’Regan, Donal
2009
Unbounded solutions for singular boundary value problems on the semi-infinite interval: upper and lower solutions and multiplicity. Zbl 1116.34016
Yan, Baoqiang; O’Regan, Donal; Agarwal, Ravi P.
2006
Differential mixed variational inequalities in finite dimensional spaces. Zbl 1186.49006
Li, Xue-Song; Huang, Nan-Jing; O’Regan, Donal
2010
Multiple positive solutions for the one-dimensional singular $$p$$-Laplacian. Zbl 1048.34047
Lü, Haishen; O’Regan, Donal; Zhong, Chengkui
2002
Triple solutions to boundary value problems on time scales. Zbl 0958.34021
Agarwal, R. P.; O’Regan, D.
2000
A coupled system of boundary value problems. Zbl 0919.34022
Agarwal, Ravi P.; O’Regan, Donal
1998
Nodal solutions for second-order $$m$$-point boundary value problems with nonlinearities across several eigenvalues. Zbl 1101.34006
Ma, Ruyun; O’Regan, Donal
2006
Controllability of Volterra-Fredholm type systems in Banach spaces. Zbl 1160.93005
Hernández M., Eduardo; O’Regan, Donal
2009
Oscillation results for second-order nonlinear neutral delay dynamic equations on time scales. Zbl 1128.34042
Saker, Samir H.; Agarwal, Ravi P.; O’Regan, Donal
2007
Existence theorems for the one-dimensional singular $$p$$-Laplacian equation with sign changing nonlinearities. Zbl 1031.34023
Agarwal, Ravi P.; Lü, Haishen; O’Regan, Donal
2003
Theorems of Leray-Schauder type and applications. Zbl 1045.47002
2001
Existence results for nonlinear integral equations. Zbl 0851.45003
O’Regan, Donal
1995
Boundary value problems on infinite intervals and semiconductor devices. Zbl 0594.34019
Granas, A.; Guenther, R. B.; Lee, J. W.; O’Regan, D.
1986
Lyapunov-type inequalities for a class of fractional differential equations. Zbl 1338.34023
O’Regan, Donal; Samet, Bessem
2015
Fixed point theorems for set-valued maps and existence principles for integral inclusions. Zbl 0956.47026
2000
Multiplicity results using bifurcation techniques for a class of boundary value problems of impulsive differential equations. Zbl 1221.34072
Liu, Yansheng; O’Regan, Donal
2011
A stacking theorem approach for fuzzy differential equations. Zbl 1042.34027
Agarwal, Ravi P.; O’Regan, Donal; Lakshmikantham, V.
2003
Existence theory for nonlinear Fredholm and Volterra integral equations on half-open intervals. Zbl 0920.45006
Meehan, Maria; O’Regan, Donal
1999
Existence results for differential delay equations. I. Zbl 0782.34070
Lee, John W.; O’Regan, Donal
1993
Topological transversality: applications to third order boundary value problems. Zbl 0628.34017
O’Regan, Daniel J.
1987
Singular boundary value problems. Zbl 0584.34012
Bobisud, L. E.; O’Regan, D.; Royalty, W. D.
1986
On abstract differential equations with non-instantaneous impulses. Zbl 1360.34131
Hernández, Eduardo; Pierri, Michelle; O’Regan, Donal
2015
Stochastically asymptotically stability of the multi-group SEIR and SIR models with random perturbation. Zbl 1243.92047
Yuan, Chengjun; Jiang, Daqing; O’Regan, Donal; Agarwal, Ravi P.
2012
Existence and asymptotic stability of solutions of a perturbed fractional functional-integral equation with linear modification of the argument. Zbl 1220.45011
Darwish, Mohamed Abdalla; Henderson, Johnny; O’Regan, Donal
2011
Oscillation of second-order damped dynamic equations on time scales. Zbl 1128.34022
Saker, Samir H.; Agarwal, Ravi P.; O’Regan, Donal
2007
Positive solutions to singular and non-singular second-order boundary value problems. Zbl 0689.34015
O’Regan, D.
1989
Existence of solutions to some singular initial value problems. Zbl 0646.34003
Bobisud, L. E.; O’Regan, D.
1988
Nodal solutions for $$m$$-point boundary value problems using bifurcation methods. Zbl 1141.34009
Sun, Jingxian; Xu, Xian; O’Regan, Donal
2008
Viability theory and fuzzy differential equations. Zbl 1074.34009
Agarwal, Ravi P.; O’Regan, Donal; Lakshmikantham, V.
2005
Positive solutions for a system of Hadamard-type fractional differential equations with semipositone nonlinearities. Zbl 1432.34010
Ding, Youzheng; Jiang, Jiqiang; O’Regan, Donal; Xu, Jiafa
2020
Hyers-Ulam stability and existence of solutions for fractional differential equations with Mittag-Leffler kernel. Zbl 1434.34014
Liu, Kui; Wang, JinRong; Zhou, Yong; O’Regan, Donal
2020
Convergence analysis of solution sets for fuzzy optimization problems. Zbl 07163150
Hung, Nguyen Van; Tam, Vo Minh; Tuan, Nguyen Huy; O’Regan, Donal
2020
A new class of generalized multiobjective games in bounded rationality with fuzzy mappings: structural $$(\lambda, \varepsilon)$$-stability and $$(\lambda, \varepsilon)$$-robustness to $$\varepsilon$$-equilibria. Zbl 07169565
Hung, Nguyen Van; Tam, Vo Minh; O’Regan, Donal; Cho, Yeol Je
2020
Periodicity of non-homogeneous trajectories for non-instantaneous impulsive heat equations. Zbl 1430.34021
Yang, Peng; Wang, Jinrong; O’Regan, Donal
2020
Existence and Ulam’s stability for conformable fractional differential equations with constant coefficients. Zbl 1422.34047
Li, Mengmeng; Wang, JinRong; O’Regan, D.
2019
Iterative learning control for differential inclusions of parabolic type with noninstantaneous impulses. Zbl 1428.93052
Liu, Shengda; Wang, JinRong; Shen, Dong; O’Regan, Donal
2019
Ulam-Hyers-Mittag-Leffler stability for $$\psi$$-Hilfer fractional-order delay differential equations. Zbl 07020825
Liu, Kui; Wang, JinRong; O’Regan, Donal
2019
Nontrivial solutions for a higher order nonlinear fractional boundary value problem involving Riemann-Liouville fractional derivatives. Zbl 1425.34031
Zhang, Keyu; O’Regan, Donal; Xu, Jiafa; Fu, Zhengqing
2019
Nonemptyness and compactness of the solution set for fractional evolution inclusions with non-instantaneous impulses. Zbl 1411.34022
Wang, Jinrong; Ibrahim, Ahmed G.; O’Regan, Donal
2019
Relative controllability of delay differential systems with impulses and linear parts defined by permutable matrices. Zbl 1410.34235
You, Zhongli; Wang, Jinrong; O’Regan, Donal; Zhou, Yong
2019
Hyers-Ulam stability for linear differences with time dependent and periodic coefficients. Zbl 1425.39015
Buşe, Constantin; O’Regan, Donal; Saierli, Olivia
2019
A new method to prove the nonuniform dichotomy spectrum theorem in $$\mathbb{R}^n$$. Zbl 1432.34074
Xia, Yonghui; Bai, Yuzhen; O’Regan, Donal
2019
Exponential stability and relative controllability of nonsingular delay systems. Zbl 1416.93173
You, Zhongli; Wang, JinRong; O’Regan, D.
2019
Levinson type inequalities and their extensions via convexity on time scales. Zbl 1409.26016
Saker, S. H.; Osman, M. M.; O’Regan, D.; Agarwal, R. P.
2019
A higher integrability theorem from a reverse weighted inequality. Zbl 1441.26010
Saker, Samir; O’Regan, Donal; Agarwal, Ravi
2019
Stable manifolds for non-instantaneous impulsive nonautonomous differential equations. Zbl 1449.34128
Li, Mengmeng; Wang, JinRong; O’Regan, Donal
2019
Basic concepts of Riemann-Liouville fractional differential equations with non-instantaneous impulses. Zbl 1425.34003
Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal
2019
Hyers-Ulam stability for linear differences with time dependent and periodic coefficients: the case when the monodromy matrix has simple eigenvalues. Zbl 1423.34070
Buşe, Constantin; O’Regan, Donal; Saierli, Olivia
2019
Calculus of fuzzy vector-valued functions and almost periodic fuzzy vector-valued functions on time scales. Zbl 1423.26059
Wang, Chao; Agarwal, Ravi P.; O’Regan, Donal
2019
Global attracting solutions to hilfer fractional differential inclusions of Sobolev type with noninstantaneous impulses and nonlocal conditions. Zbl 07114670
Wang, Jinrong; Ibrahim, Ahmed Gamal; O’Regan, Donal
2019
A surjectivity problem for 3 by 3 matrices. Zbl 1422.30012
Buşe, Constantin; O’Regan, Donal; Saierli, Olivia
2019
Abstract Leray-Schauder type alternatives and extensions. Zbl 1436.54037
O’Regan, Donal
2019
Lyapunov-type inequalities for coupled systems of nonlinear fractional differential equations via a fixed point approach. Zbl 1453.26015
Jleli, Mohamed; O’Regan, Donal; Samet, Bessem
2019
On the approximate controllability for Hilfer fractional evolution hemivariational inequalities. Zbl 1412.34193
Wang, JinRong; Liu, Xianghu; O’Regan, D.
2019
Fixed point theory for countably weakly condensing maps and multimaps in non-separable Banach spaces. Zbl 07008100
Ben Amar, Afif; Derbel, Saoussen; O’Regan, Donal; Xiang, Tian
2019
A note on general coincidence theory for set-valued maps in topological vector spaces. Zbl 1396.54042
O’Regan, Donal
2019
On the orbital Hausdorff dependence of differential equations with non-instantaneous impulses. Zbl 1384.34023
Yang, Dan; Wang, JinRong; O’Regan, Donal
2018
Topological structure of the solution set for fractional non-instantaneous impulsive evolution inclusions. Zbl 1398.34088
Wang, JinRong; Ibrahim, A. G.; O’Regan, D.
2018
Positive solutions for a system of nonlinear semipositone boundary value problems with Riemann-Liouville fractional derivatives. Zbl 1393.34018
Qiu, Xiaowei; Xu, Jiafa; O’Regan, Donal; Cui, Yujun
2018
Some comments and notes on almost periodic functions and changing-periodic time scales. Zbl 1371.26044
Agarwal, Ravi P.; O’Regan, Donal
2018
A note on initial value problems for fractional fuzzy differential equations. Zbl 1397.34013
Ngo, Hoa Van; Lupulescu, Vasile; O’Regan, Donal
2018
Controllability for noninstantaneous impulsive semilinear functional differential inclusions without compactness. Zbl 1401.26018
Wang, JinRong; Ibrahim, A. G.; O’Regan, D.; Zhou, Yong
2018
A class of nonlinear non-instantaneous impulsive differential equations involving parameters and fractional order. Zbl 1426.34021
Yang, Dan; Wang, JinRong; O’Regan, D.
2018
Positive solutions for a system of semipositone fractional difference boundary value problems. Zbl 1400.39006
Chen, Cheng; Xu, Jiafa; O’Regan, Donal; Fu, Zhengqing
2018
Representation of a solution for a fractional linear system with pure delay. Zbl 06826037
Liang, Chengbin; Wang, JinRong; O’Regan, D.
2018
Nontrivial solutions for boundary value problems of a fourth order difference equation with sign-changing nonlinearity. Zbl 1448.39023
Zhang, Keyu; O’Regan, Donal; Fu, Zhengqing
2018
Iterative learning control for noninstantaneous impulsive fractional-order systems with varying trial lengths. Zbl 1405.93116
Liu, Shengda; Wang, JinRong; Shen, Dong; O’Regan, D.
2018
Stationary points of set-valued contractive and nonexpansive mappings on ultrametric spaces. Zbl 06918875
Hosseini, Meraj; Nourouzi, Kourosh; O’Regan, Donal
2018
Some stability properties related to initial time difference for Caputo fractional differential equations. Zbl 1393.34011
Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal
2018
Hilfer-type fractional differential switched inclusions with noninstantaneous impulsive and nonlocal conditions. Zbl 1421.34043
Wang, JinRong; Ibrahim, Ahmed Gamal; O’Regan, Donal
2018
On the solutions of certain fractional kinetic equations involving $$k$$-Mittag-Leffler function. Zbl 1446.35243
Agarwal, P.; Chand, M.; Baleanu, D.; O’Regan, D.; Jain, Shilpi
2018
$$n_0$$-order $$\Delta$$-almost periodic functions and dynamic equations. Zbl 1402.26017
Wang, Chao; Agarwal, Ravi P.; O’Regan, Donal
2018
Coincidence for morphisms based on compactness principles. Zbl 1438.54146
O’Regan, Donal
2018
Existence and uniqueness of solutions for a first-order discrete fractional boundary value problem. Zbl 1401.39008
Xu, Jiafa; O’Regan, Donal
2018
On the class of relatively weakly demicompact nonlinear operators. Zbl 1455.58005
Krichen, Bilel; O’Regan, Donal
2018
A note on asymptotic behaviour of Mittag-Leffler functions. Zbl 1384.33036
Wang, JinRong; Zhou, Yong; O’Regan, D.
2018
Coincidence for morphisms based on compactness conditions on countable sets. Zbl 1428.54016
O’Regan, Donal
2018
Iterative techniques for the initial value problem for Caputo fractional differential equations with non-instantaneous impulses. Zbl 1427.34027
Agarwal, Ravi; Hristova, S.; O’Regan, D.
2018
Ergodic property of a Lotka-Volterra predator-prey model with white noise higher order perturbation under regime switching. Zbl 1427.37070
Zu, Li; Jiang, Daqing; O’Regan, Donal; Hayat, Tasawar; Ahmad, Bashir
2018
Existence and controllability for nonlinear fractional differential inclusions with nonlocal boundary conditions and time-varying delay. Zbl 1420.93008
Cheng, Yi; Agarwal, Ravi P.; O’Regan, Donal
2018
A note on coincidence theory for noncompact morphisms. Zbl 1414.54026
O’Regan, Donal
2018
Regularization and error estimates for an inverse heat problem under the conformable derivative. Zbl 1411.35286
Vu, Ho; O’Regan, Donal; Hoa, Ngo Van
2018
Multiple solutions for fractional boundary value problems. Zbl 1409.34007
Averna, Diego; O’Regan, Donal; Tornatore, Elisabetta
2018
Intersection theorems with applications in optimization. Zbl 1440.47045
Agarwal, Ravi P.; Balaj, Mircea; O’Regan, Donal
2018
Coincidence point theorems on quasi-metric spaces via simulation functions and applications to $$G$$-metric spaces. Zbl 06969103
Roldán López de Hierro, A. F.; Karapınar, E.; O’Regan, D.
2018
Some dynamic inequalities involving Hilbert and Hardy-Hilbert operators with kernels. Zbl 1401.26034
O’Regan, Donal; Rezk, Haytham M.; Saker, Samir H.
2018
On second order differential equations with state-dependent delay. Zbl 06959358
Hernández, Eduardo; Azevedo, Katia A. G.; O’Regan, Donal
2018
Controllability of fractional evolution inclusions with noninstantaneous impulses. Zbl 1401.34027
Wang, JinRong; Ibrahim, A. G.; O’Regan, D.
2018
Positive solutions for a system of $$p$$-Laplacian boundary value problems. Zbl 1400.34039
Xu, Jiafa; O’Regan, Donal; Zhang, Keyu
2018
On state dependent non-local conditions. Zbl 06892565
Hernández, Eduardo; O’Regan, Donal
2018
Asymptotic behavior of discrete evolution families in Banach spaces. Zbl 1408.39010
Buşe, Constantin; Khan, Aftab; Nguyen, Lan T.; O’Regan, Donal; Rahmat, Gul
2018
Inequalities of Hardy type and generalizations on time scales. Zbl 1384.26046
Saker, Samir H.; Osman, Mahmoud M.; O’Regan, Donal; Agarwal, Ravi P.
2018
Stability by Lyapunov like functions of nonlinear differential equations with non-instantaneous impulses. Zbl 1361.34064
Agarwal, Ravi; O’Regan, D.; Hristova, S.
2017
Non-instantaneous impulses in Caputo fractional differential equations. Zbl 1370.34008
Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal
2017
Solving interval-valued fractional initial value problems under Caputo gH-fractional differentiability. Zbl 1368.34010
Hoa, Ngo Van; Lupulescu, Vasile; O’Regan, Donal
2017
Noninstantaneous impulses in Caputo fractional differential equations and practical stability via Lyapunov functions. Zbl 1364.93551
Agarwal, Ravi; Hristova, S.; O’Regan, D.
2017
Non-instantaneous impulses in differential equations. Zbl 1426.34001
Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal
2017
Monotone iterative technique for the initial value problem for differential equations with non-instantaneous impulses. Zbl 1411.34031
Agarwal, Ravi; O’Regan, D.; Hristova, S.
2017
Controllability of nonlinear delay oscillating systems. Zbl 1413.34256
Liang, Chengbin; Wang, JinRong; O’Regan, Donal
2017
Asymptotic properties of the solutions of nonlinear non-instantaneous impulsive differential equations. Zbl 1373.93159
Yang, Dan; Wang, JinRong; O’Regan, Donal
2017
Stability with initial time difference of Caputo fractional differential equations by Lyapunov functions. Zbl 1365.34008
Agarwal, Ravi; O’Regan, Donal; Hristova, Snezhana
2017
Montone-iterative techniques for mild solutions of the initial value problem Caputo fractional differential equations with non-instantaneous impulses. Zbl 1386.34023
Agarwal, Ravi; O’Regan, Donal; Hristova, Snezhana
2017
Asymptotic behavior of a stochastic population model with Allee effect by Lévy jumps. Zbl 1377.92076
Zhang, Qiumei; Jiang, Daqing; Zhao, Yanan; O’Regan, Donal
2017
Some fractional integral inequalities involving $$m$$-convex functions. Zbl 1373.26021
Jleli, Mohamed; O’Regan, Donal; Samet, Bessem
2017
Fractional semilinear equations with causal operators. Zbl 1358.34087
Agarwal, Ravi P.; Asma; Lupulescu, Vasile; O’Regan, Donal
2017
New Hilbert dynamic inequalities on time scales. Zbl 1386.26035
Saker, S. H.; Ahmed, A. M.; Rezk, H. M.; O’Regan, D.; Agarwal, R. P.
2017
P-moment exponential stability of Caputo fractional differential equations with noninstantaneous random impulses. Zbl 1378.34005
Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal
2017
A variety of inverse Hilbert type inequalities on time scales. Zbl 1372.34038
Saker, S. H.; Rezk, H. M.; O’Regan, D.; Agarwal, R. P.
2017
Weighted piecewise pseudo double-almost periodic solution for impulsive evolution equations. Zbl 1412.34246
Wang, Chao; Agarwal, Ravi P.; O’Regan, Donal
2017
Local stable manifold of Langevin differential equations with two fractional derivatives. Zbl 1444.34018
Wang, JinRong; Peng, Shan; O’Regan, D.
2017
Coincidence theory for compact morphisms. Zbl 06830306
O’Regan, Donal
2017
Essential maps and coincidence theory. Zbl 06816829
Jleli, Mohamed; O’Regan, Donal; Samet, Bessem
2017
$$L^p$$-solutions for a class of fractional integral equations. Zbl 1370.45007
Agarwal, Ravi P.; Asma; Lupulescu, Vasile; O’Regan, Donal
2017
Common fixed point theorems in topological vector spaces via intersection theorems. Zbl 1453.47005
Agarwal, Ravi P.; Balaj, Mircea; O’Regan, Donal
2017
Existence of weak solutions for a fractional $$p$$-Laplacian equation in $$\mathbb R^N$$. Zbl 1365.35049
Xu, Jiafa; O’Regan, Donal; Dong, Wei
2017
Mönch sets and fixed point theorems for multimaps in locally convex topological vector spaces. Zbl 06696980
Cardinali, T.; O’Regan, D.; Rubbioni, P.
2017
Strict stability with respect to initial time difference for Caputo fractional differential equations by Lyapunov functions. Zbl 1362.34009
Agarwal, Ravi P.; O’Regan, Donal; Hristova, Snezhana
2017
Triple solutions for quasilinear one-dimensional $$p$$-Laplacian elliptic equations in the whole space. Zbl 1418.34065
Bonanno, Gabriele; O’Regan, Donal; Vetro, Francesca
2017
Generalized coincidence theory for set-valued maps. Zbl 1412.47025
O’Regan, Donal
2017
A matched space for time scales and applications to the study on functions. Zbl 1422.26014
Wang, Chao; Agarwal, Ravi P.; O’Regan, Donal
2017
Positive solutions for a class of fractional difference boundary value problems. Zbl 1397.39010
Xu, Jiafa; O’Regan, Donal; Hou, Chengmin; Cui, Yujun
2017
Practical stability of differential equations with non-instantaneous impulses. Zbl 1400.34089
Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal
2017
Impulsive differential equations with Gamma distributed moments of impulses and $$p$$-moment exponential stability. Zbl 1399.34043
Agarwal, R.; Hristova, S.; Kopanov, P.; O’Regan, D.
2017
$$p$$-moment exponential stability of differential equations with random impulses and the Erlang distribution. Zbl 1384.34069
Agarwal, R. P.; Hristova, S.; O’Regan, D.; Kopanov, P.
2017
On a new class of abstract neutral integro-differential equations and applications. Zbl 1398.35284
Hernández, Eduardo; O’Regan, Donal
2017
Existence of solutions for a variational inequality on the half-line. Zbl 1373.47055
Frites, O.; Moussaoui, T.; O’Regan, D.
2017
An inequality concerning the growth bound of an evolution family and the norm of a convolution operator. Zbl 06740690
Buşe, Constantin; O’Regan, Donal; Saierli, Olivia
2017
$$p$$-moment exponential stability of Caputo fractional differential equations with random impulses. Zbl 1369.34010
Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal
2017
Measures of weak noncompactness and fixed point theory in Banach algebras satisfying condition $$(\mathcal{P})$$. Zbl 1454.47055
Amar, Afif Ben; O’Regan, Donal
2017
...and 916 more Documents
all top 5