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# Floquet tranform of the derivative of a function $f(r)$
The derivative of the Floquet transform equals the Floquet tranform of the derivative. But can the Floquet tranform of the derivative of a function $f(r)$ can be expressed in terms of the Floquet tranform of the function $f(r)$?
So, is there a relation between $(U \frac{\partial f}{\partial r})(r)$ and $(Uf)(r)$ (like there is for the Fourier transform, i.e. $(F \frac{\partial f}{\partial r})(r)=iω(Ff)(r)$?