scholarly journals Subclasses Of Bi-Univalent Functions Defined By Hilbert Space Operator

2021 ◽  
Vol 1988 (1) ◽  
pp. 012077
Author(s):  
Sarah Ahmed ◽  
Maslina Darus
Keyword(s):  
Hilbert Space ◽  
Univalent Functions ◽  
Space Operator ◽  
Hilbert Space Operator

A subclass of meromorphic functions defined by a certain integral operator on Hilbert space

2017 ◽  
Vol 26 (2) ◽  
pp. 115-124
Author(s):  
Arzu Akgül
Keyword(s):  
Hilbert Space ◽  
Integral Operator ◽  
Meromorphic Functions ◽  
Hadamard Product ◽  
Extreme Points ◽  
Space Operator ◽  
Integral Means ◽  
New Class ◽  
Coefficient Inequality ◽  
Hilbert Space Operator

In the present paper, we introduce and investigate a new class of meromorphic functions associated with an integral operator, by using Hilbert space operator. For this class, we obtain coefficient inequality, extreme points, radius of close-to-convex, starlikeness and convexity, Hadamard product and integral means inequality.

scholarly journals The closure of the similarity orbit of a Hilbert space operator

1982 ◽  
Vol 6 (3) ◽  
pp. 421-427 ◽  
Author(s):  
Constantin Apostol ◽  
Domingo A. Herrero ◽  
Dan Voiculescu
Keyword(s):  
Hilbert Space ◽  
Space Operator ◽  
Similarity Orbit ◽  
Hilbert Space Operator
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