阿貝爾多項式

數學上的阿貝爾多項式(Abel polynomial)是一個多項式序列，其第n項的形式為

${\displaystyle p_{n}(x)=x(x-an)^{n-1}.}$

該序列以挪威數學家阿貝爾（1802-1829）的名字來命名。

這個多項式為二項型。

例子

當${\displaystyle a=1}$時，此多項式為（OEIS數列A137452）

${\displaystyle p_{0}(x)=1;}$

${\displaystyle p_{1}(x)=x;}$

${\displaystyle p_{2}(x)=-2x+x^{2};}$

${\displaystyle p_{3}(x)=9x-6x^{2}+x^{3};}$

${\displaystyle p_{4}(x)=-64x+48x^{2}-12x^{3}+x^{4};}$

當${\displaystyle a=1}$ ，此多項式為

${\displaystyle p_{0}(x)=1;}$

${\displaystyle p_{1}(x)=x;}$

${\displaystyle p_{2}(x)=-4x+x^{2};}$

${\displaystyle p_{3}(x)=36x-12x^{2}+x^{3};}$

${\displaystyle p_{4}(x)=-512x+192x^{2}-24x^{3}+x^{4};}$

${\displaystyle p_{5}(x)=10000x-4000x^{2}+600x^{3}-40x^{4}+x^{5};}$

${\displaystyle p_{6}(x)=-248832x+103680x^{2}-17280x^{3}+1440x^{4}-60x^{5}+x^{6};}$

參考文獻

• Rota, Gian-Carlo; Shen, Jianhong; Taylor, Brian D. All Polynomials of Binomial Type Are Represented by Abel Polynomials. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze Sér. 4. 1997, 25 (3–4): 731–738 [2021-01-30]. MR 1655539. Zbl 1003.05011. （原始內容存檔於2021-02-08）.

外部連結

• 埃里克·韋斯坦因. Abel Polynomial. MathWorld.