Bulletin of the London Mathematical Society Advance Access published online on November 1, 2009
Bulletin of the London Mathematical Society, doi:10.1112/blms/bdp088
© 2009 London Mathematical Society
On integrable solutions of a nonlinear Volterra integral equation under Carathéodory conditions

Department of Mathematics
Rzeszow University of Technology
W. Pola 2, 35-959 Rzeszow
Poland
agnchleb@prz.rzeszow.pl
Received 16 December 2008. Revision received 7 July 2009.
In this paper we study the existence of solutions of a nonlinear Volterra integral equation in the space of Lebesgue integrable functions on an unbounded interval. Our existence result is obtained under the assumption that functions involved in the considered integral equation satisfy conditions of Carathéodory type. The main tool used in the investigations of the paper is the combination of the technique of measures of weak noncompactness with the classical Schauder fixed point principle. The obtained result generalizes several ones obtained earlier in many papers and monographs.
2000 Mathematics Subject Classification 47H09, 45G10.
The first author is supported by Ministerio de Ciencia y Tecnologia, the project MTM 2007-65706, Spain.