Faber Polynomials with common zero

preprint2015arXivOpen access

Abstract

We describe the two sets of meromorphic univalent functions in the class ΣΣ, for which the sequence of Faber polynomials {Fj}j=1∞\{F_j\}_{j=1}^\infty have the roots with following properties respectively: ∑j=1n∣Fj(z0)∣=0<∣Fn+1(z0)∣,\sum_{j=1}^{n}|F_j(z_0)|=0<|F_{n+1}(z_0)|, n∈N,n\in\mathbb N, and ∣F1(z0)∣>0=∑j=2∞∣Fj(z0)∣|F_1(z_0)|> 0=\sum_{j=2}^{\infty}|F_j(z_0)|. We found an explicit form of Faber polynomials for such functions.

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