Abstract
The equation ||I + T|| = 1 + ||T||, where T is an operator on a Banach space, is called Daugavet equation. Although this is a purely isometric property, it can be used to obtain some topological conclusions regarding Banach spaces.The Daugavet equation has been studied by many authors in various contexts along the 45 last years. Recently Y. S. Choi, D. García, M. Maestre and M. Martín stu…