A mathematical operator is generaly a mapping between a domain set of functions and a range set of functions.One example is the derivative operator L ( L[f] = f' ) for example.
Can i say every representation of a electronic/electrical system ( input-output representation, statespace representation, block diagram representation) can be generalized to be formed by mathematical operators. Can i generalize to say that every electronic/electrical system ( filter,ac/dc converter, amplifier,etc ) is simply an operator ?