SOME RESULTS ON JACK’S LEMMA FOR ANALYTIC FUNCTIONS
Anahtar Kelimeler:
Analytic function, Jack’s lemma, Schwarz lemma.
SOME RESULTS ON JACK’S LEMMA FOR ANALYTIC FUNCTIONS
In this paper, an upper bound will be found for the second coefficient in the Taylor expansion of the analytical function $p(z)$ using the Jack lemma. Also, the modulus of the angular derivative of the $I_{f}(z)=\frac{zp^{\prime }(z)}{p(z)}$ function on the unit disc will be estimated from below.
Keywords:
Analytic function, Jack’s lemma, Schwarz lemma.,
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- ISSN: 2717-8900
- Yayın Aralığı: Yılda 2 Sayı
- Başlangıç: 2020
- Yayıncı: Amasya Üniversitesi