Parametric transformation functions in the Kaprekar routine I

The Kaprekar transformation is uniquely determined by parameters based on differences between symmetric values in the ordered numeric sequence. The parametric analysis of the iteration of the process requires developing Ki functions that provide the parameters of the transformed number. This is the objective of this work. As application examples we use these functions to deduce constants and cycles. But its main utility is to study the algebraic architecture of the transformation trees that we develop in the second part of this work.