Operational calculus for the solution of fractional differential equations with noncommensurate orders

We present an operational method suitable for solving fractional differential equations with two or more noncommensurate orders. The method can be applied in a recursive way in the sense that one can add or remove pseudo-poles or pseudo-zeros and recompute the output from pre-existing solutions. In order to illustrate how the method is applied and its efficiency and simplicity, we present several examples.