@article{10902/15919, year = {2018}, url = {http://hdl.handle.net/10902/15919}, abstract = {ABSTRACT: We study the analogue of 3-space problems for classes of operators acting on Banach spaces. We show examples of classes of operators having or failing the 3-operator property, and give several methods to obtain classes with this property.}, organization = {The research of the first author was supported in part by Project IB16056 de la Junta de Extremadura; that of the first and third authors was supported in part by MINECO (Spain), Project MTM2016-76958. This paper benefited from a stay in 2016 of Castillo and González at Kanagawa University invited by Prof. Cho.}, publisher = {Universidad de Extremadura, Departamento de Matemáticas.}, publisher = {Extracta mathematicae (2018), Vol.33, N.2, pp.149-165}, title = {Three-operator problems in Banach spaces}, author = {Castillo, Jesús M.F. and Cho, Muneo and González Ortiz, Manuel}, }