This paper provides the barely essential system-theoretical foundations. Basically, its goal is to introduce the notion of dynamic system and one of its simplest specialisations, namely the discrete-time linear time-invariant case. To overcome such a problem, the choice was made to provide just the most important ideas in a manner deliberately abstracted from their utilisation, with just some proof sketches when relevant, and having the sole purpose of maintaining a consistent treatise.
A byte of systems theory, Page 1 of 2
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