López Abad, J.Ruiz Bermejo, CésarTradacete Pérez, Pedro2023-06-192023-06-1920140022-123610.1016/j.jfa.2013.06.020https://hdl.handle.net/20.500.14352/34839A subset A of a Banach space is called Banach–Saks when every sequence in A has a Cesàro convergent subsequence. Our interest here focuses on the following problem: is the convex hull of a Banach–Saks set again Banach–Saks? By means of a combinatorial argument, we show that in general the answer is negative. However, sufficient conditions are given in order to obtain a positive result.engjournal articlehttp://www.sciencedirect.com/science/article/pii/S0022123613002462http://www.sciencedirect.com/restricted access517Banach–Saks propertyConvex hullSchreier spacesRamsey propertyAnálisis matemático1202 Análisis y Análisis Funcional