default search action
Google
Google Scholar
Semantic Scholar
Internet Archive Scholar
CiteSeerX
ORCIDDonal O'Regan
Person information
- affiliation: National University of Ireland, School of Mathematics, Statistics and Applied Mathematics, Galway, Ireland
Refine list
refinements active!
zoomed in on ?? of ?? records
view refined list in
export refined list as
showing all ?? records
2020 – today
- 2024
[j183]Donal O'Regan
, Safoura Rezaei Aderyani, Reza Saadati, Tofigh Allahviranloo:
Solving the Fornberg-Whitham Model Derived from Gilson-Pickering Equations by Analytical Methods. Axioms 13(2): 74 (2024)- [j182]Donal O'Regan, Safoura Rezaei Aderyani, Reza Saadati, Mustafa Inç:
Soliton Solution of the Nonlinear Time Fractional Equations: Comprehensive Methods to Solve Physical Models. Axioms 13(2): 92 (2024) - [j181]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Cohen-Grossberg Neural Network Delay Models with Fractional Derivatives with Respect to Another Function - Theoretical Bounds of the Solutions. Axioms 13(9): 605 (2024) - 2023
- [j180]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Boundary Value Problems for Fractional Differential Equations of Caputo Type and Ulam Type Stability: Basic Concepts and Study. Axioms 12(3): 226 (2023) - [j179]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Mittag-Leffler-Type Stability of BAM Neural Networks Modeled by the Generalized Proportional Riemann-Liouville Fractional Derivative. Axioms 12(6): 588 (2023) - [j178]Zhiwei Lv, Chun Wu, Donal O'Regan, Jiafa Xu:
Solvability of a Boundary Value Problem Involving Fractional Difference Equations. Axioms 12(7): 650 (2023) - [j177]Mengmeng Li, Jin Rong Wang, Donal O'Regan:
Stability of non-instantaneous impulsive systems in Hilbert spaces. Commun. Nonlinear Sci. Numer. Simul. 122: 107237 (2023) - [j176]Chuangliang Zhang, Nan-jing Huang, Donal O'Regan:
Stability of solutions for fuzzy set optimization problems with applications. Fuzzy Sets Syst. 466: 108470 (2023) - [j175]Donal O'Regan:
A note on noncompact collectively coincidence point theory. Period. Math. Hung. 87(2): 293-302 (2023) - [j174]Donal O'Regan, Safoura Rezaei Aderyani, Reza Saadati, Chenkuan Li:
Stability Results and Parametric Delayed Mittag-Leffler Matrices in Symmetric Fuzzy-Random Spaces with Application. Symmetry 15(10): 1880 (2023) - 2022
- [j173]Azam Ahadi, Zahra Eidinejad, Reza Saadati, Donal O'Regan:
Modular Stability Analysis of a Nonlinear Stochastic Fractional Volterra IDE. Algorithms 15(12): 459 (2022) - [j172]Mei Luo, Michal Feckan, Jin-Rong Wang, Donal O'Regan:
g-Expectation for Conformable Backward Stochastic Differential Equations. Axioms 11(2): 75 (2022) - [j171]Rui Liu, Michal Feckan, Donal O'Regan, Jinrong Wang:
Controllability Results for First Order Impulsive Fuzzy Differential Systems. Axioms 11(9): 471 (2022) - [j170]Martin Bohner, Vasile Lupulescu, Donal O'Regan, Waqas Ali Azhar:
Vector-valued functions on time scales and random differential equations. Comput. Appl. Math. 41(4) (2022) - [j169]Ricardo Almeida, Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Stability of Gene Regulatory Networks Modeled by Generalized Proportional Caputo Fractional Differential Equations. Entropy 24(3): 372 (2022) - [j168]Vo Minh Tam, Nguyen Van Hung, Donal O'Regan:
An existence result for a new class of fuzzy fractional differential inclusions with Clarke's subdifferential via resolvent operators in Banach spaces. Fuzzy Sets Syst. 443(Part): 221-240 (2022) - [j167]Rui Liu, Michal Feckan, Jinrong Wang, Donal O'Regan:
Ulam type stability for first-order linear and nonlinear impulsive fuzzy differential equations. Int. J. Comput. Math. 99(6): 1281-1303 (2022) - [j166]Mostafa Ghadampour, Ebrahim Soori, Ravi P. Agarwal, Donal O'Regan:
A Strong Convergence Theorem for Solving an Equilibrium Problem and a Fixed Point Problem Using the Bregman Distance. J. Optim. Theory Appl. 195(3): 854-877 (2022) - [j165]Reza Saadati, Tofigh Allahviranloo, Donal O'Regan, Fehaid Salem Alshammari:
Fuzzy Control Problem via Random Multi-Valued Equations in Symmetric F-n-NLS. Symmetry 14(9): 1778 (2022) - [j164]Soubhagya Kumar Sahoo, Pshtiwan Othman Mohammed, Donal O'Regan, Muhammad Tariq, Kamsing Nonlaopon:
New Hermite-Hadamard Type Inequalities in Connection with Interval-Valued Generalized Harmonically (h1, h2)-Godunova-Levin Functions. Symmetry 14(10): 1964 (2022) - [j163]Zahra Eidinejad, Reza Saadati, Donal O'Regan, Fehaid Salem Alshammari:
Minimum Superstability of Stochastic Ternary Antiderivations in Symmetric Matrix-Valued FB-Algebras and Symmetric Matrix-Valued FC-⋄-Algebras. Symmetry 14(10): 2064 (2022) - [j162]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Mittag-Leffler Type Stability of Delay Generalized Proportional Caputo Fractional Differential Equations: Cases of Non-Instantaneous Impulses, Instantaneous Impulses and without Impulses. Symmetry 14(11): 2290 (2022) - [j161]Wuyang Wang, Jun Ye, Jiafa Xu, Donal O'Regan:
Positive Solutions for a High-Order Riemann-Liouville Type Fractional Integral Boundary Value Problem Involving Fractional Derivatives. Symmetry 14(11): 2320 (2022) - 2021
- [j160]Ricardo Almeida, Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Quadratic Lyapunov Functions for Stability of the Generalized Proportional Fractional Differential Equations with Applications to Neural Networks. Axioms 10(4): 322 (2021) - [j159]Vasile Lupulescu, Donal O'Regan:
A new derivative concept for set-valued and fuzzy-valued functions. Differential and integral calculus in quasilinear metric spaces. Fuzzy Sets Syst. 404: 75-110 (2021) - [j158]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Lyapunov Functions and Lipschitz Stability for Riemann-Liouville Non-Instantaneous Impulsive Fractional Differential Equations. Symmetry 13(4): 730 (2021) - [j157]Donal O'Regan:
Coincidence Theory in the Coercive Case and Minimax Inequalities. Symmetry 13(7): 1220 (2021) - [j156]Donal O'Regan:
Maximal Type Elements for Families. Symmetry 13(12): 2269 (2021) - 2020
- [j155]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan, Kremena Stefanova:
Iterative Algorithm for Solving Scalar Fractional Differential Equations with Riemann-Liouville Derivative and Supremum. Algorithms 13(8): 184 (2020) - [j154]Bao Ngoc Tran, Yong Zhou, Donal O'Regan, Nguyen Huy Tuan:
On a terminal value problem for pseudoparabolic equations involving Riemann-Liouville fractional derivatives. Appl. Math. Lett. 106: 106373 (2020) - [j153]Donal O'Regan:
Coincidence Continuation Theory for Multivalued Maps with Selections in a Given Class. Axioms 9(2): 37 (2020) - [j152]Nguyen Van Hung, Vo Minh Tam, Donal O'Regan:
Existence of solutions for a new class of fuzzy differential inclusions with resolvent operators in Banach spaces. Comput. Appl. Math. 39(2) (2020) - [j151]Nguyen Anh Triet, Duc Phuong Nguyen, Donal O'Regan, Nguyen Huy Tuan:
Approximate solution of the backward problem for Kirchhoff's model of Parabolic type with discrete random noise. Comput. Math. Appl. 80(3): 453-470 (2020) - [j150]Nguyen Huy Tuan, Bao Ngoc Tran, Dumitru Baleanu, Donal O'Regan:
On well-posedness of the sub-diffusion equation with conformable derivative model. Commun. Nonlinear Sci. Numer. Simul. 89: 105332 (2020) - [j149]Vu Ho, Donal O'Regan, Ngo Van Hoa:
Two-Parameter Regularization Method for a Nonlinear Backward Heat Problem with a Conformable Derivative. Complex. 2020: 4143930:1-4143930:15 (2020) - [j148]Youzheng Ding, Jiqiang Jiang, Donal O'Regan, Jiafa Xu:
Positive Solutions for a System of Hadamard-Type Fractional Differential Equations with Semipositone Nonlinearities. Complex. 2020: 9742418:1-9742418:14 (2020) - [j147]Rui Liu, JinRong Wang, Donal O'Regan:
On the solutions of first-order linear impulsive fuzzy differential equations. Fuzzy Sets Syst. 400: 1-33 (2020) - [j146]Rui Liu, JinRong Wang, Donal O'Regan:
Ulam type stability of first-order linear impulsive fuzzy differential equations. Fuzzy Sets Syst. 400: 34-89 (2020) - [j145]Nguyen Van Hung, Vo Minh Tam, Nguyen Huy Tuan, Donal O'Regan:
Regularized gap functions and error bounds for generalized mixed weak vector quasivariational inequality problems in fuzzy environments. Fuzzy Sets Syst. 400: 162-176 (2020) - [j144]Donal O'Regan, Ngo Van Hoa:
An Initial Value Problem Involving Caputo-Hadamard Fractional Derivative: The Extremal Solutions and Stabilization. J. Adv. Eng. Comput. 4(2): 149-161 (2020) - [j143]Nguyen Van Hung, Vo Minh Tam, Nguyen Huy Tuan, Donal O'Regan:
Convergence analysis of solution sets for fuzzy optimization problems. J. Comput. Appl. Math. 369 (2020) - [j142]Nguyen Van Hung, Vo Minh Tam, Donal O'Regan, Yeol Je Cho:
A new class of generalized multiobjective games in bounded rationality with fuzzy mappings: Structural (λ, ε)-stability and (λ, ε)-robustness to ε-equilibria. J. Comput. Appl. Math. 372: 112735 (2020) - [j141]Nguyen Huy Tuan, Dumitru Baleanu, Tran Ngoc Thach, Donal O'Regan, Nguyen Huu Can:
Final value problem for nonlinear time fractional reaction-diffusion equation with discrete data. J. Comput. Appl. Math. 376: 112883 (2020) - [j140]Tahira Jabeen, Ravi P. Agarwal, Vasile Lupulescu, Donal O'Regan:
Impulsive Evolution Equations with Causal Operators. Symmetry 12(1): 48 (2020)
2010 – 2019
- 2019
- [j139]Shengda Liu, JinRong Wang, Dong Shen, Donal O'Regan:
Iterative learning control for differential inclusions of parabolic type with noninstantaneous impulses. Appl. Math. Comput. 350: 48-59 (2019) - [j138]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Lipschitz Stability for Non-Instantaneous Impulsive Caputo Fractional Differential Equations with State Dependent Delays. Axioms 8(1): 4 (2019) - [j137]Peng Yang, JinRong Wang, Donal O'Regan, Michal Feckan:
Inertial manifold for semi-linear non-instantaneous impulsive parabolic equations in an admissible space. Commun. Nonlinear Sci. Numer. Simul. 75: 174-191 (2019) - [j136]Bao Ngoc Tran, Nguyen Huy Tuan, Donal O'Regan:
Existence and uniqueness of mild solutions for a final value problem for nonlinear fractional diffusion systems. Commun. Nonlinear Sci. Numer. Simul. 78: 104882 (2019) - [j135]Chao Wang, Ravi P. Agarwal, Donal O'Regan:
Calculus of fuzzy vector-valued functions and almost periodic fuzzy vector-valued functions on time scales. Fuzzy Sets Syst. 375: 1-52 (2019) - [j134]Xianghu Liu, JinRong Wang, Donal O'Regan:
On the approximate controllability for fractional evolution inclusions of Sobolev and Clarke subdifferential type. IMA J. Math. Control. Inf. 36(1): 1-17 (2019) - [j133]Constantin Buse, Donal O'Regan, Olivia Saierli:
Hyers-Ulam Stability for Linear Differences with Time Dependent and Periodic Coefficients: The Case When the Monodromy Matrix Has Simple Eigenvalues. Symmetry 11(3): 339 (2019) - [j132]Constantin Buse, Donal O'Regan, Olivia Saierli:
Hyers-Ulam Stability for Linear Differences with Time Dependent and Periodic Coefficients. Symmetry 11(4): 512 (2019) - [j131]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Basic Concepts of Riemann-Liouville Fractional Differential Equations with Non-Instantaneous Impulses. Symmetry 11(5): 614 (2019) - 2018
- [j130]Dan Yang, JinRong Wang, Donal O'Regan:
A class of nonlinear non-instantaneous impulsive differential equations involving parameters and fractional order. Appl. Math. Comput. 321: 654-671 (2018) - [j129]Li Zu, Daqing Jiang, Donal O'Regan, Tasawar Hayat, Bashir Ahmad:
Ergodic property of a Lotka-Volterra predator-prey model with white noise higher order perturbation under regime switching. Appl. Math. Comput. 330: 93-102 (2018) - [j128]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Iterative techniques for the initial value problem for Caputo fractional differential equations with non-instantaneous impulses. Appl. Math. Comput. 334: 407-421 (2018) - [j127]Donal O'Regan:
Coincidence for morphisms based on compactness conditions on countable sets. Appl. Math. Comput. 339: 59-62 (2018) - [j126]Chengbin Liang, JinRong Wang, Donal O'Regan:
Representation of a solution for a fractional linear system with pure delay. Appl. Math. Lett. 77: 72-78 (2018) - [j125]Eduardo Hernández Morales, Donal O'Regan:
On state dependent non-local conditions. Appl. Math. Lett. 83: 103-109 (2018) - [j124]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Lyapunov Functions to Caputo Fractional Neural Networks with Time-Varying Delays. Axioms 7(2): 30 (2018) - [j123]Ngo Van Hoa, Vasile Lupulescu, Donal O'Regan:
A note on initial value problems for fractional fuzzy differential equations. Fuzzy Sets Syst. 347: 54-69 (2018) - [j122]Ravi P. Agarwal, Mircea Balaj, Donal O'Regan:
Intersection Theorems with Applications in Optimization. J. Optim. Theory Appl. 179(3): 761-777 (2018) - [j121]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Global Mittag - Leffler Synchronization for Neural Networks Modeled by Impulsive Caputo Fractional Differential Equations with Distributed Delays. Symmetry 10(10): 473 (2018) - [j120]Zhongli You, Jinrong Wang, Donal O'Regan:
Asymptotic stability of solutions of impulsive multi-delay differential equations. Trans. Inst. Meas. Control 40(15): 4143-4152 (2018) - 2017
- [j119]Ravi P. Agarwal, Donal O'Regan, Snezhana G. Hristova:
Monotone iterative technique for the initial value problem for differential equations with non-instantaneous impulses. Appl. Math. Comput. 298: 45-56 (2017) - [j118]Ravi P. Agarwal, Donal O'Regan, Snezhana G. Hristova, Muhammed Çiçek:
Practical stability with respect to initial time difference for Caputo fractional differential equations. Commun. Nonlinear Sci. Numer. Simul. 42: 106-120 (2017) - [j117]Ngo Van Hoa, Vasile Lupulescu, Donal O'Regan:
Solving interval-valued fractional initial value problems under Caputo gH-fractional differentiability. Fuzzy Sets Syst. 309: 1-34 (2017) - [j116]Ravi P. Agarwal, Snezhana G. Hristova, Donal O'Regan:
Noninstantaneous impulses in Caputo fractional differential equations and practical stability via Lyapunov functions. J. Frankl. Inst. 354(7): 3097-3119 (2017) - [j115]Dan Yang, JinRong Wang, Donal O'Regan:
Asymptotic properties of the solutions of nonlinear non-instantaneous impulsive differential equations. J. Frankl. Inst. 354(15): 6978-7011 (2017) - [j114]Ravi P. Agarwal, Mircea Balaj, Donal O'Regan:
Common Fixed Point Theorems in Topological Vector Spaces via Intersection Theorems. J. Optim. Theory Appl. 173(2): 443-458 (2017) - 2016
- [j113]Liang Wang, Daqing Jiang, Donal O'Regan:
The periodic solutions of a stochastic chemostat model with periodic washout rate. Commun. Nonlinear Sci. Numer. Simul. 37: 1-13 (2016) - [j112]Xue-song Li, Nan-Jing Huang, Donal O'Regan:
A class of impulsive differential variational inequalities in finite dimensional spaces. J. Frankl. Inst. 353(13): 3151-3175 (2016) - [j111]R. Rakkiyappan, G. Velmurugan, Xiaodi Li, Donal O'Regan:
Global dissipativity of memristor-based complex-valued neural networks with time-varying delays. Neural Comput. Appl. 27(3): 629-649 (2016) - 2015
- [j110]Dumitru Baleanu, Octavian G. Mustafa, Donal O'Regan:
A Kamenev-type oscillation result for a linear (1+α)-order fractional differential equation. Appl. Math. Comput. 259: 374-378 (2015) - [j109]Ravi P. Agarwal, Vasile Lupulescu, Donal O'Regan, Ghaus ur Rahman:
Fractional calculus and fractional differential equations in nonreflexive Banach spaces. Commun. Nonlinear Sci. Numer. Simul. 20(1): 59-73 (2015) - [j108]Li Zu, Daqing Jiang, Donal O'Regan:
Conditions for persistence and ergodicity of a stochastic Lotka-Volterra predator-prey model with regime switching. Commun. Nonlinear Sci. Numer. Simul. 29(Issues): 1-11 (2015) - [j107]Wei-bing Zhang, Nan-Jing Huang, Donal O'Regan:
Generalized Well-Posedness for Symmetric Vector Quasi-Equilibrium Problems. J. Appl. Math. 2015: 108357:1-108357:10 (2015) - [j106]Youzheng Ding, Zhongli Wei, Jiafa Xu, Donal O'Regan:
Extremal solutions for nonlinear fractional boundary value problems with p-Laplacian. J. Comput. Appl. Math. 288: 151-158 (2015) - 2014
- [j105]Qiumei Zhang, Daqing Jiang, Zhenwen Liu, Donal O'Regan:
The long time behavior of a predator-prey model with disease in the prey by stochastic perturbation. Appl. Math. Comput. 245: 305-320 (2014) - [j104]Xiaoqing Yuan, Yong-Hui Xia, Donal O'Regan:
Nonautonomous impulsive systems with unbounded nonlinear terms. Appl. Math. Comput. 245: 391-403 (2014) - [j103]Jiafa Xu, Wei Dong, Donal O'Regan:
Existence of weak solutions for a fourth-order Navier boundary value problem. Appl. Math. Lett. 37: 61-66 (2014) - [j102]Jingfeng Tian, Wen-Li Wang, Donal O'Regan:
Refinements of Generalized Hölder's Inequalities. J. Appl. Math. 2014: 274310:1-274310:9 (2014) - [j101]Sheng-lan Chen, Nan-Jing Huang, Donal O'Regan:
Geodesic B-Preinvex Functions and Multiobjective Optimization Problems on Riemannian Manifolds. J. Appl. Math. 2014: 524698:1-524698:12 (2014) - [j100]Xiaodi Li, Quanxin Zhu, Donal O'Regan:
pth Moment exponential stability of impulsive stochastic functional differential equations and application to control problems of NNs. J. Frankl. Inst. 351(9): 4435-4456 (2014) - [j99]Ravi P. Agarwal, Mircea Balaj, Donal O'Regan:
A Common Fixed Point Theorem with Applications. J. Optim. Theory Appl. 163(2): 482-490 (2014) - 2013
- [j98]Michelle Pierri, Donal O'Regan, Vanessa Rolnik:
Existence of solutions for semi-linear abstract differential equations with not instantaneous impulses. Appl. Math. Comput. 219(12): 6743-6749 (2013) - [j97]Cong Zhang, Nan-Jing Huang, Donal O'Regan:
Almost periodic solutions for a Volterra model with mutual interference and Holling type III functional response. Appl. Math. Comput. 225: 503-511 (2013) - [j96]Chengjun Guo, Donal O'Regan, Feiqi Deng, Ravi P. Agarwal:
Fixed points and exponential stability for a stochastic neutral cellular neural network. Appl. Math. Lett. 26(8): 849-853 (2013) - [j95]Hui-qiang Ma, Nan-Jing Huang, Meng Wu, Donal O'Regan:
A New Gap Function for Vector Variational Inequalities with an Application. J. Appl. Math. 2013: 423040:1-423040:8 (2013) - [j94]San-hua Wang, Nan-Jing Huang, Donal O'Regan:
Well-posedness for generalized quasi-variational inclusion problems and for optimization problems with constraints. J. Glob. Optim. 55(1): 189-208 (2013) - [j93]Eduardo Hernández Morales, Donal O'Regan, Krishnan Balachandran:
Comments on Some Recent Results on Controllability of Abstract Differential Problems. J. Optim. Theory Appl. 159(1): 292-295 (2013) - [j92]Barnabás Bede, Donal O'Regan:
The theory of pseudo-linear operators. Knowl. Based Syst. 38: 19-26 (2013) - 2012
- [j91]Donal O'Regan, Aleksandra Orpel:
A variational approach to the eigenvalue problem for higher order BVPs with singular nonlinearities. Appl. Math. Comput. 218(20): 10063-10071 (2012) - [j90]S. H. Saker, Ravi P. Agarwal, Donal O'Regan:
Gaps between zeros of second-order half-linear differential equations. Appl. Math. Comput. 219(3): 875-885 (2012) - [j89]Donal O'Regan:
Coincidence theory for multimaps. Appl. Math. Comput. 219(4): 2026-2034 (2012) - [j88]Eduardo Hernández Morales, Donal O'Regan, Maria Aparecida Bená:
On a new class of abstract integral equations and applications. Appl. Math. Comput. 219(4): 2271-2277 (2012) - [j87]Ravi P. Agarwal, Mircea Balaj, Donal O'Regan:
A Unifying Approach to Variational Relation Problems. J. Optim. Theory Appl. 155(2): 417-429 (2012) - [j86]Diwang Lin, Xiaodi Li, Donal O'Regan:
Stability analysis of generalized impulsive functional differential equations. Math. Comput. Model. 55(5-6): 1682-1690 (2012) - [j85]Zhilin Yang, Donal O'Regan:
Positive solutions of a focal problem for one-dimensional p-Laplacian equations. Math. Comput. Model. 55(7-8): 1942-1950 (2012) - 2011
- [j84]Donal O'Regan:
Applications of linking to Hammerstein integral equations. Appl. Math. Comput. 217(12): 5279-5284 (2011) - [j83]Donal O'Regan, Aleksandra Orpel:
Eigenvalue intervals for higher order problems with singular nonlinearities. Appl. Math. Comput. 218(4): 1233-1239 (2011) - [j82]Yuqing Chen, Juan J. Nieto, Donal O'Regan:
Anti-periodic solutions for evolution equations associated with maximal monotone mappings. Appl. Math. Lett. 24(3): 302-307 (2011) - [j81]Choonkil Park, Donal O'Regan, Reza Saadati:
Stability of some set-valued functional equations. Appl. Math. Lett. 24(11): 1910-1914 (2011) - [j80]Gabriele Bonanno, Beatrice Di Bella, Donal O'Regan:
Non-trivial solutions for nonlinear fourth-order elastic beam equations. Comput. Math. Appl. 62(4): 1862-1869 (2011) - [j79]Mohamed A. El-Gebeily, Donal O'Regan, Ravi P. Agarwal:
Characterization of self-adjoint ordinary differential operators. Math. Comput. Model. 54(1-2): 659-672 (2011) - 2010
- [j78]Donal O'Regan:
Essential extension type maps for general classes of maps. Appl. Math. Comput. 216(11): 3391-3395 (2010) - [j77]Mohamed A. El-Gebeily, Donal O'Regan, Salim Messauodi:
Type I operators and the approximation of singular two-point boundary value problems. Appl. Math. Comput. 216(12): 3433-3438 (2010) - [j76]Ravi P. Agarwal, Donal O'Regan, Sandra Pinelas:
Bounds for analytic solutions to integral equations in the complex domain. Appl. Math. Lett. 23(8): 847-851 (2010) - [j75]Yuqing Chen, Donal O'Regan, Ravi P. Agarwal:
Anti-periodic solutions for evolution equations associated with monotone type mappings. Appl. Math. Lett. 23(11): 1320-1325 (2010) - [j74]Ravi P. Agarwal, Donal O'Regan, Patricia J. Y. Wong:
Periodic constant-sign solutions for systems of Hill's equations. Asymptot. Anal. 67(3-4): 191-216 (2010) - [j73]Xi Li, Nan-Jing Huang, Donal O'Regan:
Strong convergence theorems for relatively nonexpansive mappings in Banach spaces with applications. Comput. Math. Appl. 60(5): 1322-1331 (2010) - [j72]Mohamed A. El-Gebeily, Donal O'Regan, Juan J. Nieto:
A monotone iterative technique for stationary and time dependent problems in Banach spaces. J. Comput. Appl. Math. 233(9): 2395-2404 (2010) - [j71]Ravi P. Agarwal, Donal O'Regan, Veli B. Shakhmurov:
Uniform separable differential operators with parameters. J. Frankl. Inst. 347(1): 2-16 (2010) - [j70]Gabriele Bonanno, Giovanni Molica Bisci, Donal O'Regan:
Infinitely many weak solutions for a class of quasilinear elliptic systems. Math. Comput. Model. 52(1-2): 152-160 (2010)
2000 – 2009
- 2009
- [j69]Yuqing Chen, Donal O'Regan:
On the homotopy property of topological degree for maximal monotone mappings. Appl. Math. Comput. 208(2): 373-377 (2009) - [j68]Ravi P. Agarwal, Donal O'Regan, Veli B. Shakhmurov:
B-Separable boundary value problems in Banach-valued function spaces. Appl. Math. Comput. 210(1): 48-63 (2009) - [j67]Yan Sun, Yeol Je Cho, Donal O'Regan:
Positive solutions for singular second order Neumann boundary value problems via a cone fixed point theorem. Appl. Math. Comput. 210(1): 80-86 (2009) - [j66]Fulong Wang, Yuqing Chen, Donal O'Regan:
Generalized degree for classes of finite dimensional upper hemi-continuous mappings in separable Banach spaces. Appl. Math. Comput. 211(1): 173-176 (2009) - [j65]Donal O'Regan:
The fixed point index for compact absorbing contractive admissible maps. Appl. Math. Comput. 215(5): 1975-1983 (2009) - [j64]Said R. Grace, Ravi P. Agarwal, Donal O'Regan:
A selection of oscillation criteria for second-order differential inclusions. Appl. Math. Lett. 22(2): 153-158 (2009) - [j63]Fulong Wang, Yuqing Chen, Donal O'Regan:
Degree theory for monotone type mappings in non-reflexive Banach spaces. Appl. Math. Lett. 22(2): 276-279 (2009) - [j62]Ali P. Farajzadeh, A. Amini-Harandi, Donal O'Regan, Ravi P. Agarwal:
New kinds of generalized variational-like inequality problems in topological vector spaces. Appl. Math. Lett. 22(7): 1126-1129 (2009) - [j61]Ravi P. Agarwal, Donal O'Regan, Veli B. Shakhmurov:
Higher order nonlinear degenerate differential operator equations. Appl. Math. Lett. 22(10): 1556-1561 (2009) - [j60]Yuqing Chen, Donal O'Regan, Fulong Wang, Ravi P. Agarwal:
A note on the degree for maximal monotone mappings in finite dimensional spaces. Appl. Math. Lett. 22(11): 1766-1769 (2009) - [j59]Eduardo Hernández Morales, Donal O'Regan:
Controllability of Volterra-Fredholm type systems in Banach spaces. J. Frankl. Inst. 346(2): 95-101 (2009) - [j58]Ravi P. Agarwal, Donal O'Regan, Patricia J. Y. Wong:
Constant-sign solutions for systems of singular integral equations of Hammerstein type. Math. Comput. Model. 50(7-8): 999-1025 (2009) - 2008
- [j57]Donal O'Regan, Reza Saadati:
Nonlinear contraction theorems in probabilistic spaces. Appl. Math. Comput. 195(1): 86-93 (2008) - [j56]Li Zu, Daqing Jiang, Donal O'Regan:
Existence theory for multiple solutions to semipositone Dirichlet boundary value problems with singular dependent nonlinearities for second-order impulsive differential equations. Appl. Math. Comput. 195(1): 240-255 (2008) - [j55]Ravi P. Agarwal, Donal O'Regan, S. H. Saker:
Oscillation and global attractivity in a delay periodic host macroparasite model. Appl. Math. Comput. 196(1): 340-352 (2008) - [j54]Sinisa N. Jesic, Donal O'Regan, Natasa A. Babacev:
A common fixed point theorem for R-weakly commuting mappings in probabilistic spaces with nonlinear contractive conditions. Appl. Math. Comput. 201(1-2): 272-281 (2008) - [j53]Fulong Wang, Yuqing Chen, Donal O'Regan:
Degree theory for (S+) mappings in non-reflexive banach spaces. Appl. Math. Comput. 202(1): 229-232 (2008) - [j52]Chengjun Yuan, Daqing Jiang, Donal O'Regan:
Existence and uniqueness of positive solutions for fourth-order nonlinear singular continuous and discrete boundary value problems. Appl. Math. Comput. 203(1): 194-201 (2008) - [j51]Donal O'Regan:
Singular integral equations arising in draining and coating flows. Appl. Math. Comput. 205(1): 438-441 (2008) - [j50]Richard Avery, Johnny Henderson, Donal O'Regan:
Four functionals fixed point theorem. Math. Comput. Model. 48(7-8): 1081-1089 (2008) - 2007
- [j49]Donal O'Regan, Miroslawa Zima:
Leggett-Williams norm-type fixed point theorems for multivalued mappings. Appl. Math. Comput. 187(2): 1238-1249 (2007) - [j48]Donal O'Regan, Ravi P. Agarwal, Kanishka Perera:
Nonlinear integral equations singular in the dependent variable. Appl. Math. Lett. 20(11): 1137-1141 (2007) - [j47]Ravi P. Agarwal, Donal O'Regan:
Second order initial value problems of Lane-Emden type. Appl. Math. Lett. 20(12): 1198-1205 (2007) - [j46]Jinhai Chen, Donal O'Regan:
The periodic boundary value problem for semilinear elastic beam equations: The resonance case. Comput. Math. Appl. 53(8): 1284-1292 (2007) - [j45]Ravi P. Agarwal, Donal O'Regan, Christopher C. Tisdell, Patricia J. Y. Wong:
Constant-sign solutions of a system of Volterra integral equations. Comput. Math. Appl. 54(1): 58-75 (2007) - [j44]Ravi P. Agarwal, Donal O'Regan, Svatoslav Stanek:
Positive and dead core solutions of singular Dirichlet boundary value problems with phi-Laplacian. Comput. Math. Appl. 54(2): 255-266 (2007) - [j43]Xu Xian, Donal O'Regan, Jingxian Sun:
Multiplicity results for three-point boundary value problems with a non-well-ordered upper and lower solution condition. Math. Comput. Model. 45(1-2): 189-200 (2007) - [j42]Baoqiang Yan, Donal O'Regan, Ravi P. Agarwal:
Multiple positive solutions for singular problems with mixed boundary data and derivative dependence. Math. Comput. Model. 45(3-4): 404-430 (2007) - [j41]Yuqing Chen, Juan J. Nieto, Donal O'Regan:
Anti-periodic solutions for fully nonlinear first-order differential equations. Math. Comput. Model. 46(9-10): 1183-1190 (2007) - 2006
- [j40]Hojatollah Adibi, Yeol Je Cho, Donal O'Regan, Reza Saadati:
Common fixed point theorems in S-fuzzy metric spaces. Appl. Math. Comput. 182(1): 820-828 (2006) - [j39]Donal O'Regan:
Leray-Schauder results for inward acyclic and approximable maps defined on Fréchet spaces. Appl. Math. Lett. 19(9): 976-982 (2006) - [j38]Ravi P. Agarwal, Donal O'Regan:
Leray-Schauder and Krasnoselskii results for multivalued maps defined on pseudo-open subsets of a Fréchet space. Appl. Math. Lett. 19(12): 1327-1334 (2006) - [j37]Ravi P. Agarwal, Donal O'Regan:
Leray-Schauder results for multivalued nonlinear contractions defined on closed subsets of a Fréchet space. Int. J. Math. Math. Sci. 2006: 43635:1-43635:8 (2006) - [j36]Ravi P. Agarwal, Donal O'Regan, Patricia J. Y. Wong:
Constant-sign solutions of systems of higher order boundary value problems with integrable singularities. Math. Comput. Model. 44(11-12): 983-1008 (2006) - 2005
- [j35]Ravi P. Agarwal, Donal O'Regan:
A multiplicity result for second order impulsive differential equations via the Leggett Williams fixed point theorem. Appl. Math. Comput. 161(2): 433-439 (2005) - [j34]Daqing Jiang, Donal O'Regan, Ravi P. Agarwal:
Optimal existence theory for single and multiple positive periodic solutions to functional difference equations. Appl. Math. Comput. 161(2): 441-462 (2005) - [j33]Haishen Lü, Donal O'Regan, Ravi P. Agarwal:
Positive solutions for singular p-Laplacian equations with sign changing nonlinearities using inequality theory. Appl. Math. Comput. 165(3): 587-597 (2005) - [j32]Ravi P. Agarwal, Donal O'Regan, V. Lakshmikantham, S. Leela:
Nonresonant singular boundary value problems with sign changing nonlinearities. Appl. Math. Comput. 167(2): 1236-1248 (2005) - [j31]Ravi P. Agarwal, Donal O'Regan:
A note on the topological transversality theorem for acyclic maps. Appl. Math. Lett. 18(1): 17-22 (2005) - [j30]Ravi P. Agarwal, Donal O'Regan:
Homotopy and normalization properties for admissible maps. Appl. Math. Lett. 18(1): 33-40 (2005) - [j29]Yuqing Chen, Yeol Je Cho, Donal O'Regan:
On perturbations of accretive mappings. Appl. Math. Lett. 18(7): 775-781 (2005) - [j28]Ravi P. Agarwal, Donal O'Regan, V. Lakshmikantham:
Viability theory and fuzzy differential equations. Fuzzy Sets Syst. 151(3): 563-580 (2005) - [j27]Ravi P. Agarwal, Jewgeni H. Dshalalow, Donal O'Regan:
Fixed point theory for Mönch-type maps defined on closed subsets of Fréchet spaces: the projective limit approach. Int. J. Math. Math. Sci. 2005(17): 2775-2782 (2005) - [j26]Józef Banas, Donal O'Regan:
Volterra-stieltjes integral operators. Math. Comput. Model. 41(2-3): 335-344 (2005) - [j25]Ravi P. Agarwal, Said R. Grace, Ivan Kiguradze, Donal O'Regan:
Oscillation of functional differential equations. Math. Comput. Model. 41(4-5): 417-461 (2005) - [j24]Józef Banas, Donal O'Regan:
Integral operators of Urysohn-Stieltjes type. Period. Math. Hung. 51(2): 1-14 (2005) - 2004
- [j23]Daniel Franco, Juan J. Nieto, Donal O'Regan:
Existence of solutions for first order ordinary differential equations with nonlinear boundary conditions. Appl. Math. Comput. 153(3): 793-802 (2004) - [j22]Ravi P. Agarwal, Said R. Grace, Donal O'Regan:
Semipositone higher-order differential equations. Appl. Math. Lett. 17(2): 201-207 (2004) - [j21]Daqing Jiang, Wenjie Zuo, Donal O'Regan, Ravi P. Agarwal:
Optimal existence conditions for second order periodic solutions of delay differential equations with upper and lower solutions in the reverse order. Int. J. Comput. Math. 81(6): 707-717 (2004) - [j20]Ravi P. Agarwal, Jewgeni H. Dshalalow, Donal O'Regan:
A Furi-Pera theorem in Hausdorff topological spaces for acyclic maps. Int. J. Math. Math. Sci. 2004(47): 2483-2488 (2004) - 2003
- [j19]Ravi P. Agarwal, Haishen Lü, Donal O'Regan:
Existence theorems for the one-dimensional singular p--Laplacian equation with sign changing nonlinearities. Appl. Math. Comput. 143(1): 15-38 (2003) - [j18]Ravi P. Agarwal, Donal O'Regan:
Fixed-point theorems for S-KKM maps. Appl. Math. Lett. 16(8): 1257-1264 (2003) - [j17]Ravi P. Agarwal, Donal O'Regan:
An index theory for countably P-concentrative J maps. Appl. Math. Lett. 16(8): 1265-1271 (2003) - 2002
- [j16]Haishen Lü, Donal O'Regan, Chengkui Zhong:
Multiple positive solutions for the one-dimensional singular p-Laplacian. Appl. Math. Comput. 133(2-3): 407-422 (2002) - [j15]Ravi P. Agarwal, Donal O'Regan:
Countably P-Concentrative Pairs and the coincidence index. Appl. Math. Lett. 15(4): 439-444 (2002) - [j14]Marlène Frigon, Donal O'Regan:
Fuzzy contractive maps and fuzzy fixed points. Fuzzy Sets Syst. 129(1): 39-45 (2002) - 2001
- [j13]Ravi P. Agarwal, Donal O'Regan:
A generalization of the Petryshyn-Leggett-Williams fixed point theorem with applications to integral inclusions. Appl. Math. Comput. 123(2): 263-274 (2001) - [j12]Ravi P. Agarwal, Donal O'Regan:
Fixed-point theorems for multivalued maps with closed values on complete gauge spaces. Appl. Math. Lett. 14(7): 831-836 (2001) - [j11]Ravi P. Agarwal, Donal O'Regan:
Variational inequalities, coincidence theory, and minimax inequalities. Appl. Math. Lett. 14(8): 989-996 (2001) - 2000
- [j10]Ravi P. Agarwal, Donal O'Regan:
A coupled system of difference equations. Appl. Math. Comput. 114(1): 39-49 (2000) - [j9]Ravi P. Agarwal, Donal O'Regan:
Multiple nonnegative solutions for second order impulsive differential equations. Appl. Math. Comput. 114(1): 51-59 (2000) - [j8]Ravi P. Agarwal, Donal O'Regan:
Multivalued essential maps of approximable and acyclic type. Appl. Math. Lett. 13(1): 7-11 (2000) - [j7]Ravi P. Agarwal, Donal O'Regan:
Singular Volterra integral equations. Appl. Math. Lett. 13(1): 115-120 (2000) - [j6]Ravi P. Agarwal, Donal O'Regan:
Existence results for singular integral equations of fredholm type. Appl. Math. Lett. 13(2): 27-34 (2000) - [j5]Ravi P. Agarwal, Donal O'Regan:
Essential and inessential maps and continuation theorems. Appl. Math. Lett. 13(2): 83-90 (2000) - [j4]Ravi P. Agarwal, Donal O'Regan:
Discrete conjugate boundary value problems. Appl. Math. Lett. 13(2): 97-104 (2000) - [j3]Ravi P. Agarwal, Donal O'Regan:
Triple solutions to boundary value problems on time scales. Appl. Math. Lett. 13(4): 7-11 (2000) - [j2]Donal O'Regan:
Weakly inward zero epi maps. Appl. Math. Lett. 13(4): 13-16 (2000)
1990 – 1999
- 1999
- [j1]Donal O'Regan, Maria Meehan:
Periodic and almost periodic solutions of integral equations. Appl. Math. Comput. 105(2-3): 121-136 (1999)
Coauthor Index
[j181] [j180] [j179] [j169] [j166] [j162] [j160] [j158] [j155] [j140] [j138] [j135] [j131] [j128] [j124] [j122] [j121] [j119] [j118] [j116] [j114] [j109] [j99] [j96] [j90] [j87] [j79] [j76] [j75] [j74] [j71] [j68] [j64] [j62] [j61] [j60] [j58] [j55] [j48] [j47] [j45] [j44] [j42] [j38] [j37] [j36] [j35] [j34] [j33] [j32] [j31] [j30] [j28] [j27] [j25] [j22] [j21] [j20] [j19] [j18] [j17] [j15] [j13] [j12] [j11] [j10] [j9] [j8] [j7] [j6] [j5] [j4] [j3]
manage site settings
To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.
Unpaywalled article links
Add open access links from 
to the list of external document links (if available).
Privacy notice: By enabling the option above, your browser will contact the API of unpaywall.org to load hyperlinks to open access articles. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Unpaywall privacy policy.
Archived links via Wayback Machine
For web page which are no longer available, try to retrieve content from the 
of the Internet Archive (if available).
Privacy notice: By enabling the option above, your browser will contact the API of archive.org to check for archived content of web pages that are no longer available. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Internet Archive privacy policy.
Reference lists
Add a list of references from 
, 
, and 
to record detail pages.
load references from crossref.org and opencitations.net
Privacy notice: By enabling the option above, your browser will contact the APIs of crossref.org, opencitations.net, and semanticscholar.org to load article reference information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Crossref privacy policy and the OpenCitations privacy policy, as well as the AI2 Privacy Policy covering Semantic Scholar.
Citation data
Add a list of citing articles from and to record detail pages.
load citations from opencitations.net
Privacy notice: By enabling the option above, your browser will contact the API of opencitations.net and semanticscholar.org to load citation information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the OpenCitations privacy policy as well as the AI2 Privacy Policy covering Semantic Scholar.
OpenAlex data
Load additional information about publications from 
.
Privacy notice: By enabling the option above, your browser will contact the API of openalex.org to load additional information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the information given by OpenAlex.
last updated on 2025-03-04 22:21 CET by the dblp team
all metadata released as open data under CC0 1.0 license
see also: Terms of Use | Privacy Policy | Imprint
dblp was originally created in 1993 at:
since 2018, dblp has been operated and maintained by:
the dblp computer science bibliography is funded and supported by:
