....

This book is more involved with matrices than with Fourier analysis. If it were more Fourier analysis we would choose notation to begin subscripts from zero like this: $B(Z) = b_0 + b_1 Z + b_2 Z^2 + b_3 Z^3$.

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...-transforms

An introduction to $Z$-transforms is found in my earlier books, FGDP and ESA-PVI.

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... says:

http://www.autodiff.com/tamc/

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