Definition of the Bilateral Z-Transform - Z-Transform Part 1

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The previous two videos introduced and provided motivation for use of the Z-Transform. We now formally define both the Bilateral Z-Transform and Bilateral Inverse Z-Transform.

The next video in this playlist is:

The previous video in this playlist is:

Course website:

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thank you so much for these interesting lectures!!
what reference books do you use!?

malshwwaf
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So if you let r = 1 and Omega = w, finding Z transform will yield to Fourier Transform of discrete signal (at least I believe so). And the thing I do not understand is why do we exactly have to have the notion of number Z, is that the amplitude (r) part that changes the game or what is the deal?

giorgitsintsadze