Proposition: Factorial Polynomials vs. Polynomials

Every factorial polynomial equals some "usual" polynomial, i.e. if $$\phi(x)=a_nx^{\underline{n}}+a_{n-1}x^{\underline{n-1}}+\ldots+a_1x^{\underline{1}}+a_0,\quad a_n\neq 0$$ is a factorial polynomial of degree $n$ then there are $b_n,\ldots,b_0\in C,$ such that $$\phi(x)=b_{n}x^{n}+b_{n-1}x^{n-1}+\ldots+b_{1}x+b_0,\quad b_n\neq 0$$ and vice versa.

Proofs: 1

Definitions: 1
Solutions: 2


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References

Bibliography

  1. Miller, Kenneth S.: "An Introduction to the Calculus of Finite Differences And Difference Equations", Dover Publications, Inc, 1960