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There are many useful Fourier rules and pairs that can be very helpful when applying the FT or IFT to different real‐world applications. We will briefly revisit them to remind the properties of the FT to the reader. Provided that FT and IFT are defined as in Eqs. 1.1 and 1.2, respectively, FT pair is denoted as

(1.3)

and the corresponding alternative pair is given by

(1.4)

Based on these notations, the properties of FT are listed briefly below.