Completely Monotone Invariance of Smoothing via Central Vector Lattice Differences
摘要
Using central difference expansions of summations, we study properties of a graduation (smoothing) process in the settings of abelian semigroups with an involution and Dedekind complete vector lattices. We show that a-completely monotone functions, a variant of G. Choquet’s completely monotone functions, are left fixed by graduations satisfying certain positivity conditions. Several numerical and theoretical examples and detailed discussions of various cases are given.