Results 31 to 40 of about 13,555,709 (372)

Some geometric properties of certain meromorphically multivalent functions associated with the first-order differential subordination

open access: yesAIMS Mathematics, 2021
A new subclass $\mathcal{G}_n(A,B,\lambda)$ of meromorphically multivalent functions defined by the first-order differential subordination is introduced. Some geometric properties of this new subclass are investigated.
Ying Yang, Jin-Lin Liu
doaj   +1 more source

A trace formula for functions of contractions and analytic operator Lipschitz functions [PDF]

open access: yes, 2017
In this note we study the problem of evaluating the trace of $f(T)-f(R)$, where $T$ and $R$ are contractions on Hilbert space with trace class difference, i.e., $T-R\in\boldsymbol{S}_1$ and $f$ is a function analytic in the unit disk ${\Bbb D}$.
Malamud, Mark   +2 more
core   +3 more sources

Properties of Functions Involving Struve Function

open access: yesMathematics, 2018
Let f ( z ) = z + ∑ n = 2 ∞ a n z n and g p , b , c ( z ) = z + ∑ n = 2 ∞ ( − c 4 ) n − 1 ( 3 2 ) n − 1 ( k ) n − 1 z n with
Jonathan Aaron Azlan Mosiun   +1 more
doaj   +1 more source

Commuting analytic functions [PDF]

open access: yesTransactions of the American Mathematical Society, 1984
Let f f and g g (not conformal automorphisms of the unit disk) be analytic mappings of the unit disk into itself. We say f f and g g commute if f ∘ g = g ∘ f f \circ g = g \circ f .
openaire   +3 more sources

Restrictions of analytic functions. I [PDF]

open access: yesProceedings of the American Mathematical Society, 1975
An isometric expansion is derived which recaptures any H 2 {H^2} function from a restriction of its boundary function to a Borel set.
James Rovnyak, Marvin Rosenblum
openaire   +3 more sources

On Bounded Analytic Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1950
The objective of this paper is to give an alternative derivation of results on bounded analytic functions recently obtained by Ahlfors [1] and Garabedian [2].1 While it is admitted that the main idea to be used is more in the nature of a lucky guess than of a method, it will be found that the gain in brevity and simplicity of the argument is ...
openaire   +3 more sources

On a subclass of starlike functions associated with a vertical strip domain

open access: yesJournal of Inequalities and Applications, 2019
In this paper, we consider a subclass of starlike functions associated with a vertical strip domain. We obtain several results concerned with integral representations, convolutions, and coefficient inequalities for functions belonging to this class ...
Yong Sun   +3 more
doaj   +1 more source

Subordinating results for a class of analytic functions defined by Hadamard product and Atshan and Rafid operator [PDF]

open access: yesSurveys in Mathematics and its Applications, 2021
In this paper, we defined a class of analytic functions defined by Hadamard product and Atshan and Rafid operator and obtained some subordinating results for functions in this class.
M. K. Aouf   +2 more
doaj  

A new parametric differential operator generalized a class of d'Alembert's equations

open access: yesJournal of Taibah University for Science, 2021
The studies in operator theory are attracting many researchers. The central aim of this investigation is to formulate a special parametric differential operator (PDO) based on the error function in the open unit disk. The suggested operator is related to
Ibtisam Aldawish, Rabha W. Ibrahim
doaj   +1 more source

Results for Multivalent Functions Third-Order Differential Subordination and Superordination by Using New Differential Operator

open access: yesWasit Journal for Pure Sciences
the aim of this study was to give results differential Subordination and Superordination for analytic functions on third order and obtain some sandwich results through the new ...
maryam dheyaa alquzweeni
doaj   +1 more source

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