In this paper we generalize Pascal's matrix by defining the polynomials "Fa
ctorial Binomial". Then using this generalization, we introduce a two-varia
ble Pascal's matrix and state its related theorems and prove them. Finally
we introduce Pascal's functional matrix associated with a sequence a = {a(n
)}(n greater than or equal to 0), and obtain several important combinatoria
l identities. (C) 1999 Elsevier Science Inc. All rights reserved.