Results 51 to 60 of about 6,503,100 (217)

Uniqueness of L-Functions Concerning Certain Differential Polynomials

open access: yesDiscrete Dynamics in Nature and Society, 2018
Relying on Nevanlinna theory and the properties of L-functions in the extended Selberg class, we mainly study the uniqueness problems on L-functions concerning certain differential polynomials. This generalizes some results of Steuding, Li, Fang, and Liu-
Wen-Jie Hao, Jun-Fan Chen
doaj   +1 more source

Entire solutions for several general quadratic trinomial differential difference equations

open access: yesOpen Mathematics, 2021
This paper is devoted to exploring the existence and the forms of entire solutions of several quadratic trinomial differential difference equations with more general forms.
Luo Jun, Xu Hong Yan, Hu Fen
doaj   +1 more source

Robust Controller Design Using the Nevanlinna-Pick Interpolation in Gyro Stabilized Pod

open access: yesDiscrete Dynamics in Nature and Society, 2010
The sensitivity minimization of feedback system is solved based on the theory of Nevanlinna-Pick interpolation with degree constraint without using weighting functions. More details of the dynamic characteristic of second-order system investigated, which
Bin Liu   +3 more
doaj   +1 more source

A power of a meromorphic function sharing a set with its higher order derivative

open access: yesActa Universitatis Sapientiae: Mathematica, 2022
In this paper, we deduce the form of a nonconstant meromorphic function f when some power of f shares certain set counting multiplicities in the weak sense with the k-th derivative of the power.
Karmakar Himadri, Sahoo Pulak
doaj   +1 more source

Genericity of a result in Nevanlinna Theory [PDF]

open access: yesarXiv, 2021
We show that the derivative f' of the generic function f in the disk algebra lies outside of the localized Nevanlinna class for every arc in the unit circle.
arxiv  

From asymptotics to spectral measures: determinate versus indeterminate moment problems [PDF]

open access: yes, 2005
In the field of orthogonal polynomials theory, the classical Markov theorem shows that for determinate moment problems the spectral measure is under control of the polynomials asymptotics.
Valent, Galliano
core   +5 more sources

Nevanlinna class, Dirichlet series and Szegö's problem [PDF]

open access: yesarXiv, 2022
This paper is associated with Nevanlinna class, Dirichlet series and Szeg\"o's problem in infinitely many variables. As we will see, there is a natural connection between these topics. The paper first introduces the Nevanlinna class and the Smirnov class in this context, and generalizes the classical theory in finitely many variables to the infinite ...
arxiv  

Uniqueness on linear difference polynomials of meromorphic functions

open access: yesAIMS Mathematics, 2021
Suppose that $f(z)$ is a meromorphic function with hyper order $\sigma_{2}(f)
Ran Ran Zhang   +2 more
doaj   +1 more source

On applications of Herglotz-Nevanlinna functions in material sciences, II: extended applications and generalized theory [PDF]

open access: yesarXiv, 2022
Part II of the review article focuses on the applications of Herglotz-Nevanlinna functions in material sciences. It presents a diverse set of applications with details and the role of Herglotz-Nevanlinna functions clearly pointed out. This paper is concluded by a collection of existent generalizations of the class of Herglotz-Nevanlinna functions that ...
arxiv  

Two meromorphic functions on annuli sharing some pairs of small functions or values

open access: yesAIMS Mathematics, 2021
In this paper, we prove that two admissible meromorphic functions on an annulus must be linked by a quasi-Möbius transformation if they share some pairs of small function with multiplicities truncated by 4.
Hongzhe Cao
doaj   +1 more source

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