关于Bell多项式及其它的一些恒等式
BELL POLYNOMIALS AND ITS SOME IDENTITIES

本文引入了一个新的多项式，即Bell多项式.利用初等数论及组合方法，证明了包含该多项式的一些恒等式.作为这些恒等式的应用，给出了关于Bell数的同余式.
In this paper, we introduce a new polynomial called Bell polynomials. By using the elementary and combinational methods, we prove some identities for this polynomials. As an application of these identities, we give an interesting congruence for Bell numbers