# Donal O'Regan

According to our database1, Donal O'Regan authored at least 151 papers between 1999 and 2020.

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## Bibliography

2020
Impulsive Evolution Equations with Causal Operators.
Symmetry, 2020

Final value problem for nonlinear time fractional reaction-diffusion equation with discrete data.
J. Comput. Appl. Math., 2020

Convergence analysis of solution sets for fuzzy optimization problems.
J. Comput. Appl. Math., 2020

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., 2020

Ulam type stability of first-order linear impulsive fuzzy differential equations.
Fuzzy Sets Syst., 2020

On the solutions of first-order linear impulsive fuzzy differential equations.
Fuzzy Sets Syst., 2020

Regularized gap functions and error bounds for generalized mixed weak vector quasivariational inequality problems in fuzzy environments.
Fuzzy Sets Syst., 2020

Two-Parameter Regularization Method for a Nonlinear Backward Heat Problem with a Conformable Derivative.
Complex., 2020

Positive Solutions for a System of Hadamard-Type Fractional Differential Equations with Semipositone Nonlinearities.
Complex., 2020

On well-posedness of the sub-diffusion equation with conformable derivative model.
Commun. Nonlinear Sci. Numer. Simul., 2020

Coincidence Continuation Theory for Multivalued Maps with Selections in a Given Class.
Axioms, 2020

On a terminal value problem for pseudoparabolic equations involving Riemann-Liouville fractional derivatives.
Appl. Math. Lett., 2020

Iterative Algorithm for Solving Scalar Fractional Differential Equations with Riemann-Liouville Derivative and Supremum.
Algorithms, 2020

2019
Hyers-Ulam Stability for Linear Differences with Time Dependent and Periodic Coefficients.
Symmetry, 2019

Hyers-Ulam Stability for Linear Differences with Time Dependent and Periodic Coefficients: The Case When the Monodromy Matrix Has Simple Eigenvalues.
Symmetry, 2019

Basic Concepts of Riemann-Liouville Fractional Differential Equations with Non-Instantaneous Impulses.
Symmetry, 2019

On the approximate controllability for fractional evolution inclusions of Sobolev and Clarke subdifferential type.
IMA J. Math. Control. Inf., 2019

Calculus of fuzzy vector-valued functions and almost periodic fuzzy vector-valued functions on time scales.
Fuzzy Sets Syst., 2019

Inertial manifold for semi-linear non-instantaneous impulsive parabolic equations in an admissible space.
Commun. Nonlinear Sci. Numer. Simul., 2019

Existence and uniqueness of mild solutions for a final value problem for nonlinear fractional diffusion systems.
Commun. Nonlinear Sci. Numer. Simul., 2019

Lipschitz Stability for Non-Instantaneous Impulsive Caputo Fractional Differential Equations with State Dependent Delays.
Axioms, 2019

Iterative learning control for differential inclusions of parabolic type with noninstantaneous impulses.
Appl. Math. Comput., 2019

2018
Global Mittag - Leffler Synchronization for Neural Networks Modeled by Impulsive Caputo Fractional Differential Equations with Distributed Delays.
Symmetry, 2018

Intersection Theorems with Applications in Optimization.
J. Optim. Theory Appl., 2018

A note on initial value problems for fractional fuzzy differential equations.
Fuzzy Sets Syst., 2018

Lyapunov Functions to Caputo Fractional Neural Networks with Time-Varying Delays.
Axioms, 2018

Representation of a solution for a fractional linear system with pure delay.
Appl. Math. Lett., 2018

On state dependent non-local conditions.
Appl. Math. Lett., 2018

Ergodic property of a Lotka-Volterra predator-prey model with white noise higher order perturbation under regime switching.
Appl. Math. Comput., 2018

A class of nonlinear non-instantaneous impulsive differential equations involving parameters and fractional order.
Appl. Math. Comput., 2018

Coincidence for morphisms based on compactness conditions on countable sets.
Appl. Math. Comput., 2018

Iterative techniques for the initial value problem for Caputo fractional differential equations with non-instantaneous impulses.
Appl. Math. Comput., 2018

2017
Common Fixed Point Theorems in Topological Vector Spaces via Intersection Theorems.
J. Optim. Theory Appl., 2017

Asymptotic properties of the solutions of nonlinear non-instantaneous impulsive differential equations.
J. Frankl. Inst., 2017

Noninstantaneous impulses in Caputo fractional differential equations and practical stability via Lyapunov functions.
J. Frankl. Inst., 2017

Solving interval-valued fractional initial value problems under Caputo gH-fractional differentiability.
Fuzzy Sets Syst., 2017

Practical stability with respect to initial time difference for Caputo fractional differential equations.
Commun. Nonlinear Sci. Numer. Simul., 2017

Monotone iterative technique for the initial value problem for differential equations with non-instantaneous impulses.
Appl. Math. Comput., 2017

2016
Global dissipativity of memristor-based complex-valued neural networks with time-varying delays.
Neural Comput. Appl., 2016

A class of impulsive differential variational inequalities in finite dimensional spaces.
J. Frankl. Inst., 2016

The periodic solutions of a stochastic chemostat model with periodic washout rate.
Commun. Nonlinear Sci. Numer. Simul., 2016

2015
Extremal solutions for nonlinear fractional boundary value problems with p-Laplacian.
J. Comput. Appl. Math., 2015

Generalized Well-Posedness for Symmetric Vector Quasi-Equilibrium Problems.
J. Appl. Math., 2015

Conditions for persistence and ergodicity of a stochastic Lotka-Volterra predator-prey model with regime switching.
Commun. Nonlinear Sci. Numer. Simul., 2015

Fractional calculus and fractional differential equations in nonreflexive Banach spaces.
Commun. Nonlinear Sci. Numer. Simul., 2015

A Kamenev-type oscillation result for a linear (1+α)-order fractional differential equation.
Appl. Math. Comput., 2015

2014
A Common Fixed Point Theorem with Applications.
J. Optim. Theory Appl., 2014

<i>p</i>th Moment exponential stability of impulsive stochastic functional differential equations and application to control problems of NNs.
J. Frankl. Inst., 2014

Refinements of Generalized Hölder's Inequalities.
J. Appl. Math., 2014

Geodesic <i>B</i>-Preinvex Functions and Multiobjective Optimization Problems on Riemannian Manifolds.
J. Appl. Math., 2014

Existence of weak solutions for a fourth-order Navier boundary value problem.
Appl. Math. Lett., 2014

The long time behavior of a predator-prey model with disease in the prey by stochastic perturbation.
Appl. Math. Comput., 2014

Nonautonomous impulsive systems with unbounded nonlinear terms.
Appl. Math. Comput., 2014

2013
The theory of pseudo-linear operators.
Knowl. Based Syst., 2013

Comments on Some Recent Results on Controllability of Abstract Differential Problems.
J. Optim. Theory Appl., 2013

Well-posedness for generalized quasi-variational inclusion problems and for optimization problems with constraints.
J. Glob. Optim., 2013

A New Gap Function for Vector Variational Inequalities with an Application.
J. Appl. Math., 2013

Fixed points and exponential stability for a stochastic neutral cellular neural network.
Appl. Math. Lett., 2013

Almost periodic solutions for a Volterra model with mutual interference and Holling type III functional response.
Appl. Math. Comput., 2013

Existence of solutions for semi-linear abstract differential equations with not instantaneous impulses.
Appl. Math. Comput., 2013

2012
Positive solutions of a focal problem for one-dimensional p-Laplacian equations.
Math. Comput. Model., 2012

Stability analysis of generalized impulsive functional differential equations.
Math. Comput. Model., 2012

A Unifying Approach to Variational Relation Problems.
J. Optim. Theory Appl., 2012

Gaps between zeros of second-order half-linear differential equations.
Appl. Math. Comput., 2012

A variational approach to the eigenvalue problem for higher order BVPs with singular nonlinearities.
Appl. Math. Comput., 2012

Coincidence theory for multimaps.
Appl. Math. Comput., 2012

On a new class of abstract integral equations and applications.
Appl. Math. Comput., 2012

2011
Characterization of self-adjoint ordinary differential operators.
Math. Comput. Model., 2011

Non-trivial solutions for nonlinear fourth-order elastic beam equations.
Comput. Math. Appl., 2011

Stability of some set-valued functional equations.
Appl. Math. Lett., 2011

Anti-periodic solutions for evolution equations associated with maximal monotone mappings.
Appl. Math. Lett., 2011

Eigenvalue intervals for higher order problems with singular nonlinearities.
Appl. Math. Comput., 2011

Applications of linking to Hammerstein integral equations.
Appl. Math. Comput., 2011

2010
Infinitely many weak solutions for a class of quasilinear elliptic systems.
Math. Comput. Model., 2010

Uniform separable differential operators with parameters.
J. Frankl. Inst., 2010

A monotone iterative technique for stationary and time dependent problems in Banach spaces.
J. Comput. Appl. Math., 2010

Strong convergence theorems for relatively nonexpansive mappings in Banach spaces with applications.
Comput. Math. Appl., 2010

Periodic constant-sign solutions for systems of Hill's equations.
Asymptot. Anal., 2010

Anti-periodic solutions for evolution equations associated with monotone type mappings.
Appl. Math. Lett., 2010

Bounds for analytic solutions to integral equations in the complex domain.
Appl. Math. Lett., 2010

Essential extension type maps for general classes of maps.
Appl. Math. Comput., 2010

Type I operators and the approximation of singular two-point boundary value problems.
Appl. Math. Comput., 2010

2009
Constant-sign solutions for systems of singular integral equations of Hammerstein type.
Math. Comput. Model., 2009

Controllability of Volterra-Fredholm type systems in Banach spaces.
J. Frankl. Inst., 2009

Degree theory for monotone type mappings in non-reflexive Banach spaces.
Appl. Math. Lett., 2009

A selection of oscillation criteria for second-order differential inclusions.
Appl. Math. Lett., 2009

New kinds of generalized variational-like inequality problems in topological vector spaces.
Appl. Math. Lett., 2009

A note on the degree for maximal monotone mappings in finite dimensional spaces.
Appl. Math. Lett., 2009

Higher order nonlinear degenerate differential operator equations.
Appl. Math. Lett., 2009

Generalized degree for classes of finite dimensional upper hemi-continuous mappings in separable Banach spaces.
Appl. Math. Comput., 2009

Positive solutions for singular second order Neumann boundary value problems via a cone fixed point theorem.
Appl. Math. Comput., 2009

The fixed point index for compact absorbing contractive admissible maps.
Appl. Math. Comput., 2009

On the homotopy property of topological degree for maximal monotone mappings.
Appl. Math. Comput., 2009

B-Separable boundary value problems in Banach-valued function spaces.
Appl. Math. Comput., 2009

2008
Four functionals fixed point theorem.
Math. Comput. Model., 2008

Existence theory for multiple solutions to semipositone Dirichlet boundary value problems with singular dependent nonlinearities for second-order impulsive differential equations.
Appl. Math. Comput., 2008

Existence and uniqueness of positive solutions for fourth-order nonlinear singular continuous and discrete boundary value problems.
Appl. Math. Comput., 2008

Degree theory for (S<sub>+</sub>) mappings in non-reflexive banach spaces.
Appl. Math. Comput., 2008

Nonlinear contraction theorems in probabilistic spaces.
Appl. Math. Comput., 2008

Singular integral equations arising in draining and coating flows.
Appl. Math. Comput., 2008

A common fixed point theorem for R-weakly commuting mappings in probabilistic spaces with nonlinear contractive conditions.
Appl. Math. Comput., 2008

Oscillation and global attractivity in a delay periodic host macroparasite model.
Appl. Math. Comput., 2008

2007
Multiple positive solutions for singular problems with mixed boundary data and derivative dependence.
Math. Comput. Model., 2007

Multiplicity results for three-point boundary value problems with a non-well-ordered upper and lower solution condition.
Math. Comput. Model., 2007

Anti-periodic solutions for fully nonlinear first-order differential equations.
Math. Comput. Model., 2007

The periodic boundary value problem for semilinear elastic beam equations: The resonance case.
Comput. Math. Appl., 2007

Constant-sign solutions of a system of Volterra integral equations.
Comput. Math. Appl., 2007

Positive and dead core solutions of singular Dirichlet boundary value problems with phi-Laplacian.
Comput. Math. Appl., 2007

Nonlinear integral equations singular in the dependent variable.
Appl. Math. Lett., 2007

Second order initial value problems of Lane-Emden type.
Appl. Math. Lett., 2007

Leggett-Williams norm-type fixed point theorems for multivalued mappings.
Appl. Math. Comput., 2007

2006
Constant-sign solutions of systems of higher order boundary value problems with integrable singularities.
Math. Comput. Model., 2006

Leray-Schauder results for multivalued nonlinear contractions defined on closed subsets of a Fréchet space.
Int. J. Math. Math. Sci., 2006

Leray-Schauder results for inward acyclic and approximable maps defined on Fréchet spaces.
Appl. Math. Lett., 2006

Leray-Schauder and Krasnoselskii results for multivalued maps defined on pseudo-open subsets of a Fréchet space.
Appl. Math. Lett., 2006

Common fixed point theorems in S-fuzzy metric spaces.
Appl. Math. Comput., 2006

2005
Integral operators of Urysohn-Stieltjes type.
Period. Math. Hung., 2005

Volterra-stieltjes integral operators.
Math. Comput. Model., 2005

Oscillation of functional differential equations.
Math. Comput. Model., 2005

Fixed point theory for Mönch-type maps defined on closed subsets of Fréchet spaces: the projective limit approach.
Int. J. Math. Math. Sci., 2005

Viability theory and fuzzy differential equations.
Fuzzy Sets Syst., 2005

On perturbations of accretive mappings.
Appl. Math. Lett., 2005

Homotopy and normalization properties for admissible maps.
Appl. Math. Lett., 2005

A note on the topological transversality theorem for acyclic maps.
Appl. Math. Lett., 2005

Positive solutions for singular p-Laplacian equations with sign changing nonlinearities using inequality theory.
Appl. Math. Comput., 2005

Optimal existence theory for single and multiple positive periodic solutions to functional difference equations.
Appl. Math. Comput., 2005

Nonresonant singular boundary value problems with sign changing nonlinearities.
Appl. Math. Comput., 2005

A multiplicity result for second order impulsive differential equations via the Leggett Williams fixed point theorem.
Appl. Math. Comput., 2005

2004
A Furi-Pera theorem in Hausdorff topological spaces for acyclic maps.
Int. J. Math. Math. Sci., 2004

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., 2004

Semipositone higher-order differential equations.
Appl. Math. Lett., 2004

Existence of solutions for first order ordinary differential equations with nonlinear boundary conditions.
Appl. Math. Comput., 2004

2003
An index theory for countably <i>P</i>-concentrative <i>J</i> maps.
Appl. Math. Lett., 2003

Fixed-point theorems for <i>S</i>-KKM maps.
Appl. Math. Lett., 2003

Existence theorems for the one-dimensional singular p--Laplacian equation with sign changing nonlinearities.
Appl. Math. Comput., 2003

2002
Fuzzy contractive maps and fuzzy fixed points.
Fuzzy Sets Syst., 2002

Countably P-Concentrative Pairs and the coincidence index.
Appl. Math. Lett., 2002

Multiple positive solutions for the one-dimensional singular p-Laplacian.
Appl. Math. Comput., 2002

2001
Variational inequalities, coincidence theory, and minimax inequalities.
Appl. Math. Lett., 2001

Fixed-point theorems for multivalued maps with closed values on complete gauge spaces.
Appl. Math. Lett., 2001

A generalization of the Petryshyn-Leggett-Williams fixed point theorem with applications to integral inclusions.
Appl. Math. Comput., 2001

2000
Weakly inward zero epi maps.
Appl. Math. Lett., 2000

Triple solutions to boundary value problems on time scales.
Appl. Math. Lett., 2000

Discrete conjugate boundary value problems.
Appl. Math. Lett., 2000

Essential and inessential maps and continuation theorems.
Appl. Math. Lett., 2000

Existence results for singular integral equations of fredholm type.
Appl. Math. Lett., 2000

Singular Volterra integral equations.
Appl. Math. Lett., 2000

Multivalued essential maps of approximable and acyclic type.
Appl. Math. Lett., 2000

Multiple nonnegative solutions for second order impulsive differential equations.
Appl. Math. Comput., 2000

A coupled system of difference equations.
Appl. Math. Comput., 2000

1999
Periodic and almost periodic solutions of integral equations.
Appl. Math. Comput., 1999