%0 Journal Article %A Ferrera Cuesta, Juan %A Gómez Gil, Javier %A Llorente Jorge, Jesús %T Infinite derivatives of the Takagi-Van der Waerden functions %D 2019 %U https://hdl.handle.net/20.500.14352/133232 %X In this paper we characterize the set of points where the lateral derivatives of the Takagi-Van der Waerden functions are infinite. We also prove that the set of points with infinite derivative has Hausdorff dimension one. %~