Let MI denote the set of all scalar multiples of all isometries in a Hubert space H. In this paper finitedimensional linear spaces contained in MI will be investigated. Commutativity of such spaces ...

This paper reviews and extends several aspects of the analysis of linear combinations of time series. Special cases are temporal and contemporaneous aggregations and systematic sampling. We present ...

Some examples of generalized linear models follow. Explanatory variables can be any combination of continuous variables, classification variables, and interactions.