Kernel Polynomial

The function

$$K_n(x_0,x)=\overline{K_n(x,x_0)}=K_n(\bar x,\bar x_0)$$

which is useful in the study of many Polynomials.

References

Szegö, G. Orthogonal Polynomials, 4th ed. Providence, RI: Amer. Math. Soc., 1975.