Sharpened forms of the generalized Schwarz inequality on the boundary

Autor: Tuğba Akyel, Bülent Nafi Örnek
Rok vydání: 2016
Předmět:
Zdroj: Proceedings - Mathematical Sciences. 126:69-78
ISSN: 0973-7685
0253-4142
DOI: 10.1007/s12044-015-0255-2
Popis: In this paper, a boundary version of the Schwarz inequality is investigated. We obtain more general results at the boundary. If we know the second coefficient in the expansion of the function f(z) = 1 + cpzp + cp + 1zp + 1…, then we obtain new inequalities of the Schwarz inequality at boundary by taking into account cp + 1 and zeros of the function f(z) − 1. The sharpness of these inequalities is also proved.
Databáze: OpenAIRE