Some generalizations of Darbo's fixed point theorem under weak topology features with application to a Volterra-type integral equation
Submitted: 2023-10-14
|Accepted: 2025-01-29
|Published: 2025-04-01
Copyright (c) 2025 Mohamed Khazou, Abdelmjid Khchine

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
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Keywords:
weak-topology, measure of weak noncompactness, Volterra-type integral equations, fixed point theorem, coupled fixed point, weakly sequentially continuous operator, ws-compact operator
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Abstract:
In this paper, we provide some generalizations of Darbo's fixed point theorem for larger classes of contraction. Our results are investigated under the weak topology of a Banach space using the measure of weak noncompactness. The results presented in the paper generalize and extend several well-known comparable results in the literature. Further, We illustrate the applicability of our theoretical findings by studying the existence of solutions for a coupled of nonlinear Volterra-type integral equations.
References:
R. P. Agarwal, M. Meehan and D. O'Regan, Fixed point theory and applications, Cambridge University Press, 2001. https://doi.org/10.1017/CBO9780511543005
R. P. Agarwal, D. O'Regan and M. A. Taoudi, Fixed point theorems for ws-compact mappings in Banach spaces, Fixed Point Theory and Applications 2010 (2010), 183596. https://doi.org/10.1155/2010/183596
A. Aghajani, R. Allahyari and M. Mursaleen, A generalization of Darbo's theorem with application to the solvability of systems of integral equations, J. Comput. Appl. Math. 260 (2014), 68-77. https://doi.org/10.1016/j.cam.2013.09.039
A. Aghajani, J. Banaś and N. Sabzali, Some generalizations of Darbo fixed point theorem and applications, Bulletin of the Belgian Mathematical Society-Simon Stevin 20, no. 2 (2013), 345-358. https://doi.org/10.36045/bbms/1369316549
A. Aghajani and N. Sabzali, Existence of coupled fixed points via measure of noncompactness and applications, Journal of nonlinear and convex analysis 15, no. 5 (2014), 941-952.
A. Ali, M. Arshad, A. Hussain, N. Hussain and S. M. Alsulami, On new generalized θb-contractions and related fixed point theorems, Journal of Inequalities and Applications 2022 (2022), 37. https://doi.org/10.1186/s13660-022-02770-8
I. Altun and D. Turkoglu, A fixed point theorem for mappings satisfying a general contractive condition of operator type, J. Comput. Anal. Appl. 9, no. 1 (2007). https://doi.org/10.1155/2007/17301
O. Arino, S. Gautier and J. P. Penot, A fixed point theorem for sequentially continuous mappings with application to ordinary differential equations, Funkc. Ekvac. 27, no. 3 (1984), 273-279.
J. M. Ball, Weak continuity properties of mapping and semi-groups, Proc. Roy. Soc. Edinburgh Sect. A 72, no. 4 (1975), 275-280. https://doi.org/10.1017/S008045410000964X
S. Banach, Sur les opérations dans les ensembles abstraits et leur application aux équations intégrales, Fund. math. 3, no. 1 (1922), 133-181. https://doi.org/10.4064/fm-3-1-133-181
S. Banaei, M. Mursaleen and M. Parvaneh, Some fixed point theorems via measure of noncompactness with applications to differential equations, Comput. Appl. Math. 39, no. 3 (2020), 1-12. https://doi.org/10.1007/s40314-020-01164-0
J. Banaś, Applications of measures of weak noncompactness and some classes of operators in the theory of functional equations in the Lebesgue space, Nonlinear Analysis: Theory, Methods & Applications 30, no. 6 (1997), 3283-3293. https://doi.org/10.1016/S0362-546X(96)00157-5
J. Banaś and K. Goebel, Measures of noncompactness in Banach spaces, Lecture Notes in Pure and Applied Mathematics (1980).
J. Banaś and J. Rivero, On measures of weak noncompactness, Annali di Matematica Pura ed Applicata 151, no. 1 (1988), 213-224. https://doi.org/10.1007/BF01762795
J. Banaś and M. A. Taoudi, Fixed points and solutions of operator equations for the weak topology in Banach algebras, Taiwanese Journal of Mathematics 18, no. 3 (2014), 871-893. https://doi.org/10.11650/tjm.18.2014.3860
T. G. Bhaskar and V. Lakshmikantham, Fixed point theorems in partially ordered metric spaces and applications, Nonlinear Analysis: Theory, Methods & Applications 65, no. 7 (2006), 1379-1393. https://doi.org/10.1016/j.na.2005.10.017
L. Cai and J. Liang, New generalizations of Darbo's fixed point theorem, Fixed Point Theory and Applications 2015 (2015), 156. https://doi.org/10.1186/s13663-015-0406-2
G. Darbo, Punti uniti in trasformazioni a codominio non compatto, Rendiconti del Seminario matematico della Università di Padova 24 (1955), 84-92.
F. S. De Blasi, On a property of the unit sphere in a Banach space, Bull. mathématique la Société des Sci. Mathématiques la République Social. Roum. (1977), 259-262.
S. Djebali, D. O'Regan and Z. Sahnoun, On the solvability of some operator equations and inclusions in Banach spaces with the weak topology, Commun. Appl. Anal. 15, no. 1 (2011), 125-140.
I. Dobrakov, On representation of linear operators on C₀(T,X), Czechoslov. Math. J. 21, no. 1 (1971), 13-30. https://doi.org/10.21136/CMJ.1971.101000
G. Emmanuele, Measure of weak noncompactness and fixed point theorems, Bulletin mathématique de la Société des Sciences Mathématiques de la République Socialiste de Roumanie (1981), 353-358.
R. F. Geitz, Pettis integration, Proc. Am. Math. Soc. 82 (1981), 81-86. https://doi.org/10.1090/S0002-9939-1981-0603606-8
M. A. Geraghty, On contractive mappings, Proc. Am. Math. Soc. 40, no. 2 (1973), 604-608. https://doi.org/10.1090/S0002-9939-1973-0334176-5
N. Hussain, A. Asiri, N. Shafqat, A. Hussain and Z. Anees, Coupled coincidence best proximity point results for generalized Ciric contractions, AIP Advances 14, no. 3 (2024), 030701. https://doi.org/10.1063/5.0189512
N. Hussain and M. A. Taoudi, Krasnosel'skii-type fixed point theorems with applications to Volterra integral equations, Fixed Point Theory and Applications 2013 (2013), 1-16. https://doi.org/10.1186/1687-1812-2013-1
H. Isik, S. Banaei, F. Golkarmanesh, V. Parvaneh, C. Park and M. Khorshidi, On new extensions of Darbo's fixed point theorem with applications, Symmetry 12, no. 3 (2020), 424. https://doi.org/10.3390/sym12030424
K. Kuratowski, Sur les espaces complets, Fundamenta mathematicae 15 (1930), 301-309. https://doi.org/10.4064/fm-15-1-301-309
K. Latrach, M. A. Taoudi and A. Zeghal, Some fixed point theorems of the Schauder and the Krasnosel'skii type and application to nonlinear transport equations, Journal of Differential Equations 221, no. 1 (2006), 256-271. https://doi.org/10.1016/j.jde.2005.04.010
A. R. Mitchell and C. Smith, An existence theorem for weak solutions of differential equations in Banach spaces, Nonlinear Equations in Abstract Spaces, Academic Press (1978), 387-404. https://doi.org/10.1016/B978-0-12-434160-9.50028-X
V. I. Opoitsev, Heterogeneous and combined concave operators, Siberian Mathematical Journal 16, no. 4 (1975), 597-605. https://doi.org/10.1007/BF00967133
D. O'Regan, Fixed point theory for weakly contractive maps with applications to operator inclusions in Banach spaces relative to the weak topology, Z. Anal. Anwendungen 17, no. 2 (1989), 281-296. https://doi.org/10.4171/zaa/822
D. O'Regan, Integral equations in reflexive Banach spaces and weak topologies, Proc. Am. Math. Soc. 124 (1996), 607-614. https://doi.org/10.1090/S0002-9939-96-03154-1
D. O'Regan, Operator equations in Banach spaces relative to the weak topology, Arch. Math. (Basel) 71, no. 2 (1998), 123-136. https://doi.org/10.1007/s000130050243
B. J. Pettis, On integration in vector spaces, Trans. Am. Math. Soc. 44, no. 2 (1938), 277-304. https://doi.org/10.1090/S0002-9947-1938-1501970-8
B. N. Sadovskii, A fixed-point principle, Functional Analysis and Its Applications 1, no. 2 (1967), 151-153. https://doi.org/10.1007/BF01076087
H. A. Salem, On the theory of fractional calculus in the Pettis-function spaces, Journal of Function Spaces 2018 (2018), 746148. https://doi.org/10.1155/2018/8746148
R. Whitley, An elementary proof of the Eberlein-Smulian theorem, Math. Ann. 172, no. 2 (1967), 116-118. https://doi.org/10.1007/BF01350091



