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Donal O'Regan

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2009
31EESaid 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)
30EEFulong 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)
2008
29EELi 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. Applied Mathematics and Computation 195(1): 240-255 (2008)
28EEDonal O'Regan, Reza Saadati: Nonlinear contraction theorems in probabilistic spaces. Applied Mathematics and Computation 195(1): 86-93 (2008)
27EERavi P. Agarwal, Donal O'Regan, S. H. Saker: Oscillation and global attractivity in a delay periodic host macroparasite model. Applied Mathematics and Computation 196(1): 340-352 (2008)
26EESinisa 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. Applied Mathematics and Computation 201(1-2): 272-281 (2008)
25EEFulong Wang, Yuqing Chen, Donal O'Regan: Degree theory for (S+) mappings in non-reflexive banach spaces. Applied Mathematics and Computation 202(1): 229-232 (2008)
24EEChengjun Yuan, Daqing Jiang, Donal O'Regan: Existence and uniqueness of positive solutions for fourth-order nonlinear singular continuous and discrete boundary value problems. Applied Mathematics and Computation 203(1): 194-201 (2008)
23EEDonal O'Regan: Singular integral equations arising in draining and coating flows. Applied Mathematics and Computation 205(1): 438-441 (2008)
2007
22EEDonal O'Regan, Ravi P. Agarwal, Kanishka Perera: Nonlinear integral equations singular in the dependent variable. Appl. Math. Lett. 20(11): 1137-1141 (2007)
21EERavi P. Agarwal, Donal O'Regan: Second order initial value problems of Lane-Emden type. Appl. Math. Lett. 20(12): 1198-1205 (2007)
20EEDonal O'Regan, Miroslawa Zima: Leggett-Williams norm-type fixed point theorems for multivalued mappings. Applied Mathematics and Computation 187(2): 1238-1249 (2007)
2006
19EERavi 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)
18EEDonal O'Regan: Leray-Schauder results for inward acyclic and approximable maps defined on Fréchet spaces. Appl. Math. Lett. 19(9): 976-982 (2006)
17EEH. Adibi, Yeol Je Cho, Donal O'Regan, Reza Saadati: Common fixed point theorems in S-fuzzy metric spaces. Applied Mathematics and Computation 182(1): 820-828 (2006)
2005
16EERavi P. Agarwal, Donal O'Regan: A note on the topological transversality theorem for acyclic maps. Appl. Math. Lett. 18(1): 17-22 (2005)
15EERavi P. Agarwal, Donal O'Regan: Homotopy and normalization properties for admissible maps. Appl. Math. Lett. 18(1): 33-40 (2005)
14EEYu Qing Chen, Yeol Je Cho, Donal O'Regan: On perturbations of accretive mappings. Appl. Math. Lett. 18(7): 775-781 (2005)
13EERavi P. Agarwal, Donal O'Regan: A multiplicity result for second order impulsive differential equations via the Leggett Williams fixed point theorem. Applied Mathematics and Computation 161(2): 433-439 (2005)
12EEDaqing Jiang, Donal O'Regan, Ravi P. Agarwal: Optimal existence theory for single and multiple positive periodic solutions to functional difference equations. Applied Mathematics and Computation 161(2): 441-462 (2005)
11EEHaishen Lü, Donal O'Regan, Ravi P. Agarwal: Positive solutions for singular p-Laplacian equations with sign changing nonlinearities using inequality theory. Applied Mathematics and Computation 165(3): 587-597 (2005)
10EERavi P. Agarwal, Donal O'Regan, V. Lakshmikantham, S. Leela: Nonresonant singular boundary value problems with sign changing nonlinearities. Applied Mathematics and Computation 167(2): 1236-1248 (2005)
9EERavi P. Agarwal, Donal O'Regan, V. Lakshmikantham: Viability theory and fuzzy differential equations. Fuzzy Sets and Systems 151(3): 563-580 (2005)
2004
8EERavi P. Agarwal, Said R. Grace, Donal O'Regan: Semipositone higher-order differential equations. Appl. Math. Lett. 17(2): 201-207 (2004)
7EEDaqing 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)
2003
6EERavi P. Agarwal, Donal O'Regan: Fixed-point theorems for S-KKM maps. Appl. Math. Lett. 16(8): 1257-1264 (2003)
5EERavi P. Agarwal, Donal O'Regan: An index theory for countably P-concentrative J maps. Appl. Math. Lett. 16(8): 1265-1271 (2003)
2002
4EERavi P. Agarwal, Donal O'Regan: Countably P-Concentrative Pairs and the coincidence index. Appl. Math. Lett. 15(4): 439-444 (2002)
3EEMarlène Frigon, Donal O'Regan: Fuzzy contractive maps and fuzzy fixed points. Fuzzy Sets and Systems 129(1): 39-45 (2002)
2001
2EERavi 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)
1EERavi P. Agarwal, Donal O'Regan: Variational inequalities, coincidence theory, and minimax inequalities. Appl. Math. Lett. 14(8): 989-996 (2001)

Coauthor Index

1H. Adibi [17]
2Ravi P. Agarwal [1] [2] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [15] [16] [19] [21] [22] [27] [31]
3Natasa A. Babacev [26]
4Yu Qing Chen [14]
5Yuqing Chen [25] [30]
6Yeol Je Cho [14] [17]
7Marlène Frigon [3]
8Said R. Grace [8] [31]
9Sinisa N. Jesic [26]
10Daqing Jiang [7] [12] [24] [29]
11V. Lakshmikantham [9] [10]
12S. Leela [10]
13Haishen Lü [11]
14Kanishka Perera [22]
15Reza Saadati [17] [28]
16S. H. Saker [27]
17Fulong Wang [25] [30]
18Chengjun Yuan [24]
19Miroslawa Zima [20]
20Li Zu [29]
21Wenjie Zuo [7]

Colors in the list of coauthors

Copyright © Sun May 17 03:24:02 2009 by Michael Ley (ley@uni-trier.de)