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Author
Donal O’Regan
also known as D O'Regan, D O’Regan, D. O'REGAN
National University of Ireland · Ollscoil na Gaillimhe – University of Galway · Bohai University · Florida Institute of Technology
About this author
Works
1,703
Cited by
26,406
h-index
67
i10
566
ORCID ↗
Top papers
Fixed Point Theory and Applications
Ravi P. Agarwal, Maria Meehan, Donal O’Regan
·
2001
·
Cambridge University Press eBooks
↗ 813
Positive Solutions of Differential, Difference and Integral Equations
Ravi P. Agarwal, Donal O’Regan, Patricia J. Y. Wong
·
1999
↗ 681
Dynamic equations on time scales: a survey
Ravi P. Agarwal, Martin Böhner, Donal O’Regan, et al.
·
2002
·
Journal of Computational and Applied Mathematics
↗ 620
Generalized contractions in partially ordered metric spaces
Ravi P. Agarwal, M. El-Gebeily, Donal O’Regan
·
2008
·
Applicable Analysis
↗ 561
Oscillation Theory for Difference and Functional Differential Equations
Ravi P. Agarwal, Said R. Grace, Donal O’Regan
·
2000
↗ 518
On a new class of abstract impulsive differential equations
Eduardo Hernández, Donal O’Regan
·
2012
·
Proceedings of the American Mathematical Society
↗ 492
OA
Variational approach to impulsive differential equations
Juan J. Nieto, Donal O’Regan
·
2007
·
Nonlinear Analysis Real World Applications
↗ 416
Fixed Point Theory for Lipschitzian-type Mappings with Applications
D. R. Sahu, Donal O’Regan, Ravi P. Agarwal
·
2009
↗ 409
Infinite Interval Problems for Differential, Difference and Integral Equations
Ravi P. Agarwal, Donal O’Regan
·
2001
↗ 358
Fixed point theorems for generalized contractions in ordered metric spaces
Donal O’Regan, Adrian Petruşel
·
2007
·
Journal of Mathematical Analysis and Applications
↗ 347
OA
Discrete Oscillation Theory
Ravi P. Agarwal, Martin Böhner, Said R. Grace, et al.
·
2005
↗ 326
Positive solutions for Dirichlet problems of singular nonlinear fractional differential equations
Ravi P. Agarwal, Donal O’Regan, Svatoslav Staněk
·
2010
·
Journal of Mathematical Analysis and Applications
↗ 263
OA