A characterization is presented of the class of stationary processes that have polynomial covariance functions of degree less than or equal to 4 on an interval. The results extend to isotropic random ...

The paper discusses both theoretical properties and practical implementation of product integration rules of the form $$\int^\infty_{-\infty} k(x)f(x) dx \approx \sum ...

specifies monthly intervals. Abbreviations are MONTH, MONTHS, MONTHLY, MON. The starting subperiod s is in months. For example, MONTH2.2 intervals are February -March, April -May, June -July, August ...

Polynomial equations are fundamental concepts in mathematics that define relationships between numbers and variables in a structured manner. In mathematics, various equations are composed using ...