These are given by the Hurwitz zeta function; equivalently, linear combinations of the Hurwitz zeta give fractal, differentiable-nowhere eigenfunctions, including the Takagi function.
Natural transformation | Economic Transformation Programme | Allied Command Transformation | Tschirnhaus transformation | Transformation between distributions in time–frequency analysis | Office of Force Transformation | MOF Model to Text Transformation Language | Dyadic | diffusionless transformation | Bogoliubov transformation |