Selected Continuous-Time Fourier Theorems

This appendix presents Fourier theorems which are nice to know, but
which do not, strictly speaking, pertain to the DFT. The
*differentiation theorem* for Fourier Transforms
comes up quite often, and its dual pertains as
well to the DTFT (Appendix B).
The *scaling theorem* provides an important basic
insight into time-frequency duality. Finally, the very fundamental
*uncertainty principle* is related to the scaling theorem.

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