Twin Combinatorial Identity v——Inverse Types
Geng Ji · Hainan Daxue xuebao. Ziran kexue ban · 2001
If A(t),B(t) are formal power series and satisfy the condition A(B(t))=t or B(A(t))=t ,they are named formal power series of the iverse types.Through the operation of formal power series,we obtain the twin combinatorial identity theorem.When it is applied to the expansion of function,we also obtain some specific twin combinatorial identities of the inverse types.