The Uniqueness of the Power Series Representation of Certain Fields with Valuations

1938 ◽  
Vol 39 (2) ◽  
pp. 370 ◽  
Author(s):  
Saunders Mac Lane
Keyword(s):  
Power Series ◽  
Series Representation ◽  
Power Series Representation

scholarly journals A radius of convexity problem

1981 ◽  
Vol 24 (3) ◽  
pp. 381-388 ◽  
Author(s):  
M.L. Mogra ◽  
O.P. Juneja
Keyword(s):  
Power Series ◽  
Unit Disc ◽  
Series Representation ◽  
Radius Of Convexity ◽  
Power Series Representation

The authors determine the sharp radius of convexity for functions analytic and starlike in the unit disc having power series representation of the form where an+1 is fixed. The estimate obtained is an improvement over the corresponding fixed second coefficient result. It is expected that this approach will lead to sharpening and improvement of a number of earlier known results.

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