Some extensions of Faa di Bruno's formula with divided differences

The well-known formula of Faa di Bruno's for higher derivatives of a composite function has played an important role in combinatorics. In this paper we generalize the divided difference form of Faa di Bruno's formula and give an explicit formula for the n-th divided difference of a multicomposite function. More generally, we establish the relationships of the Bell polynomials with respect to multicomposite functions. Applying these to multicomposite functions, we obtain some extensions of Faa di Bruno's formula. (C) 2009 Elsevier Ltd. All rights reserved.