连续双哈恩多项式

连续双哈恩多项式(Continuous dual Hahn polynomials)是一个正交多项式，由下列广义超几何函数定义[1]

S_{n}(x^{2};a,b,c)={}_{3}F_{2}(-n,a+ix,a-ix;a+b,a+c;1).\

连续双哈恩多项式

连续双哈恩多项式复数图

${\begin{aligned}R1&=(a+2.3)*(a+3.5)*hypergeom([-1,a+I*x,a-I*x],[a+2.3,a+3.5],1)\\R2&=pochhammer(a+2.3,2)*pochhammer(a+3.5,2)*hypergeom([-2,a+I*x,a-I*x],[a+2.3,a+3.5],1)\\R3&=pochhammer(a+2.3,3)*pochhammer(a+3.5,3)*hypergeom([-3,a+I*x,a-I*x],[a+2.3,a+3.5],1).\end{aligned}}$

参考文献

Koekoek, Roelof; Lesky, Peter A.; Swarttouw, René F. (2010), Hypergeometric orthogonal polynomials and their q-analogues, Springer Monographs in Mathematics, Berlin, New York: Springer-Verlag, doi:10.1007/978-3-642-05014-5, ISBN 978-3-642-05013-8, MR 2656096

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[1] Koekoek, Roelof; Lesky, Peter A.; Swarttouw, René F. (2010), Hypergeometric orthogonal polynomials and their q-analogues, Springer Monographs in Mathematics, Berlin, New York: Springer-Verlag, doi:10.1007/978-3-642-05014-5, ISBN 978-3-642-05013-8, MR 2656096