RT Journal Article T1 Existence of solutions of integral equations defined in unbounded domains via spectral theory A1 Cabada Fernández, Alberto A1 Fernández Tojo, Fernando Adrián A1 López Somoza, Lucía K1 Asymptotic behavior K1 Integral operators K1 Unbounded domain K1 Spectral theory AB In this work, we study integral equations defined on the whole real line. Using a suitable Banach space, we look for solutions which satisfy some certain kind of asymptotic behavior. We will consider spectral theory to find fixed points of the integral operator. PB Springer SN 1660-5446 YR 2020 FD 2020-02-21 LK https://hdl.handle.net/10347/37805 UL https://hdl.handle.net/10347/37805 LA eng NO This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/s00009-020-1494-8 NO The three authors were partially supported by Ministerio de Economía y Competitividad, Spain, and FEDER, project MTM2013-43014-P, and by the Agencia Estatal de Investigación (AEI) of Spain under Grant MTM2016-75140-P, co-financed by the European Community fund FEDER. L. López-Somoza: supported by FPU scholarship, Ministerio de Educación, Cultura y Deporte, Spain. DS Minerva RD 22 abr 2026