Abstract
In this paper, we establish new fixed point results for some weakly countably condensing and weakly sequentially continuous maps, fixed-point results of Krasnosel’skii–Daher type for the sum of two weakly sequentially continuous mappings in Banach spaces, a multivalued version of the Daher fixed point theorem for weakly countably condensing multimaps having w-weakly closed graph in Banach spaces and a Krasnosel’skii–Daher-type theorem for multimaps. In addition, we show the applicability of our results to the theory of Volterra integral equations in Banach spaces. Our results are formulated in terms of the axiomatic measure of weak noncompactness.
Similar content being viewed by others
References
Agarwal, R.P., O’Regan, D.: A generalization of the Krasnoselskii–Petryshyn compression and expansion theorem: an essential map approach. J. Korean Math. Soc. 38, 669–681 (2001)
Agarwal, R.P., O’Regan, D., Taoudi, M.A.: Browder Krasnoselskii-type fixed point theorems in Banach spaces. Fixed Point Theory Appl. 2010, 243716 (2010)
Angosto, C., Cascales, B.: Measures of weak noncompactness in Banach spaces. Topol. Appl. 156, 1412–1421 (2009)
Arino, O., Gautier, S., Penot, J.P.: A fixed point theorem for sequentially continuous mappings with application to ordinary differential equations. Funkciala. Ekvac. 27, 273–279 (1984)
Banas, J., Ben Amar, A.: Measures of noncompactness in locally convex spaces and fixed point theory for the sum of two operators on unbounded convex sets. Comment. Math. Univ. Carolin. 54(1), 21–40 (2013)
Banas, J., Rivero, J.: On measures of weak noncompactness. Ann. Math. Pure Appl. 151, 213–224 (1988)
Banas, J., Martinón, A.: Measures of weak noncompactness in Banach sequence spaces. Port. Math. 59(2), 131–138 (1995)
Barbu, V.: Nonlinear semigroups and differential equations in Banach spaces. Noordhoff International Publishing, Leyden (1976)
Barroso, C.S., Teixeira, E.V.: A topological and geometric approach to fixed point results for sum of operators and applications. Nonlinear Anal. 60, 625–650 (2005)
Ben Amar, A., Mnif, M.: Leray–Schauder alternatives for weakly sequentially continuous mappings and application to transport equation. Math. Methods Appl. Sci. 33, 80–90 (2010)
Ben Amar, A., Xu, S.: Measures of weak noncompactness and fixed point theory for 1-set weakly contractive operators on unbounded domains. Anal. Theory Appl. 27, 224–238 (2011)
Biondini, M., Cardinali, T.: Existence of solutions for a nonlinear integral equation via a hybrid fixed Point theorem. Results Math. 71, 1259–1276 (2017)
Browder, F.E.: Nonlinear mappings of nonexpansive and accretive type in Banach spaces. Bull. Am. Math. Soc. 73, 875–882 (1967)
Cardinali, T., Papalini, F.: Fixed point theorems for multifunctions in topological vector spaces. J. Math. Anal. Appl. 186, 769–777 (1994)
Cardinali, T., Rubbioni, P.: Multivalued fixed point theorems in terms of weak topology and measure of weak noncompactness. J. Math. Anal. Appl. 405, 409–415 (2013)
Cardinali, T., Rubbioni, P.: Countably condensing multimaps and fixed points. Electron. J. Qual. Theory Differ. Equ. 83, 1–9 (2012)
Daher, S.J.: On a fixed point principle of Sadovskii. Nonlinear Anal. Theory Methods Appl. 2, 643–645 (1978)
De Blasi, F.S.: On a property of the unit sphere in Banach space. Bull. Math. Soc. Sci. Math. R.S. Roumanie 21, 259–262 (1977)
Dobrakov, I.: On representation of linear operators on \(C_0(T, X)\). Czechoslov. Math. J. 21, 13–30 (1971)
Garcia-Falset, J., Morales, C.H.: Existence theorems for m-accretive operators in Banach spaces. J. Math. Anal. Appl. 309, 453–461 (1967)
Garcia-Falset, J., Latrach, K.: Krasnosel’skii-type fixed pointtheoremsfor weakly sequentially continuous mapoings. Bull. Lond. Math. Soc. 44, 25–38 (2012)
Geitz, R.F.: Pettis integration. Proc. Am. Math. Soc. 82, 81–86 (1981)
Himmelberg, C.J., Porter, J.R., Van Vleck, J.R.: Fixed point theorems for condensing multifunctions. Proc. Am. Math. Soc. 23, 635–641 (1969)
Hussain, N., Taoudi, M.A.: Krasnosel’skii-type fixed point theorems with applications to Volterra integral equations. Fixed Point Theory Appl. 2013, 196 (2013)
Kim, I.S.: Fixed Points, Eigenvalues and Surjectivity. J. Korean Math. Soc. 45, 151–161 (2008)
Kato, T.: Nonlinear semigroups and evolution equation. J. Math. Soc. Japan 19, 508–520 (1967)
Kryczka, A., Prus, S., Szczepanik, M.: Measure of weak noncompactness and real interpolation of operators. Bull. Aust. Math. Soc. 62, 389–401 (2000)
Kryczka, A., Prus, S.: Measure of weak noncompactness under complex interpolation. Stud. Math. 147, 89–102 (2001)
Mitchell, A.R., Smith, C.K.L.: An existence theorem for weak solutions of differential equations in Banach spaces. In: Lakshmikantham, V. (ed.) Nonlinear Equations in Abstract Spaces, pp. 387–404. Academic Press, San Diego (1978)
O’Regan, D.: Fixed-point theory for weakly sequentially continuous mappings. Math. Comput. Model. 27, 1–14 (1998)
O’Regan, D., Taoudi, M.A.: Fixed point theorems for the sum of two weakly sequentially continuous mappings. Nonlinear Anal. 73, 283–289 (2010)
Sadovskii, B.N.: A fixed point principle. Funct. Anal. Appl. 1, 151–153 (1967)
Smart, D.R.: Fixed Point Theorems. Cambridge University Press, Cambridge (1980)
Taoudi, M.A.: Krasnosel’skii type fixed point theorems under weak topology features. Nonlinear Anal. 72, 478–482 (2010)
Xiang, T., Georgiev, S.G.: Noncompact-type Krasnoselskiifixed-point theorems and their applications. Math. Methods Appl. Sci. 39, 833–863 (2016)
Xiang, T., Yuan, R.: Critical type of Krasnosel’skii fixed point theorem. Proc. Am. Math. Soc. 3, 1033–1044 (2011)
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Amar, A.B., Derbel, S., O’Regan, D. et al. Fixed point theory for countably weakly condensing maps and multimaps in non-separable Banach spaces. J. Fixed Point Theory Appl. 21, 8 (2019). https://doi.org/10.1007/s11784-018-0644-0
Published:
DOI: https://doi.org/10.1007/s11784-018-0644-0
Keywords
- Weakly sequentially continuous
- weakly countably condensing
- weakly countably \(1-\)set-contractive
- w-weakly closed graph
- integral equation
- measure of weak noncompactness