Ortigueira, Manuel D.Machado, J. A.TenreiroTrujillo, Juan J.Vinagre, Blas M.2023-11-032023-11-032011http://hdl.handle.net/10400.22/23834The word fractional acquired a new glamour at the beginning of the XXI century. Searching the web we count millions of references about this topic. In fact, we find it in a lot of apparently different scientific fields that in a first glance seem not to have any connection, but that verified to be a good strategy to adopt in their studies. Here we focus our attention into two of the most interesting and useful fractional areas: the Fractional Calculus and the Fractional Fourier transform.engFractional CalculusFractional systemsjournal article10.1016/j.sigpro.2010.08.002