Multiplicity theory for multivariate wide sense stationary generalized processes

It is shown that the representation theory of a multivariate, purely nondeterministic, wide sense stationary generalized process can be reduced to a study of some isomorphism results established for commutation relations occurring in quantum mechanics. Using this simplification a multiplicity theory is developed. The time domain and spectral representation of the process are investigated in this context, and the concept of a generalized innovations process is introduced.