Results 21 to 30 of about 9,438,737 (154)
Composition operators on weighted Hilbert spaces of Dirichlet series
Journal of the London Mathematical Society, Volume 108, Issue 2, Page 837-868, August 2023., 2023 Abstract We study composition operators of characteristic zero on weighted Hilbert spaces of Dirichlet series. For this purpose, we demonstrate the existence of weighted mean counting functions associated with the Dirichlet series symbol, and provide a corresponding change of variables formula for the composition operator.
Athanasios Kouroupis +1 more
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The Bloch–Nevanlinna Problem Under Lineability
Mediterranean Journal of Mathematics, 2023 The original version of the celebrated Bloch–Nevanlinna problem asked whether there exists or not a holomorphic function in the unit disc of bounded characteristic whose derivative is not of bounded characteristic.
L. Bernal González, A. Bonilla
semanticscholar +1 more source
On the differentiability of T(r,f)
International Journal of Mathematics and Mathematical Sciences, 1982 It is well known that T(r,f) is differentiable at least for r>r0. We show that, in fact, T(r,f) is differentiable for all but at most one value of r, and if T(r,f) fails to have a derivative for some value of r, then f is a constant times a quotient of ...
Douglas W. Townsed
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Meromorphic functions of finite $\lambda$-type in a half-strip
Karpatsʹkì Matematičnì Publìkacìï, 2013 The Nevanlinna characteristic of meromorphic functions in a half-strip, such that $f(\sigma)=f(\sigma+ 2\pi i)$, is introduced, and its main properties are investigated.
N. B. Sokul's'ka
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Growth characteristics of loxodromic and elliptic functions [PDF]
Математичні Студії, 2012 The asymptotic behaviour of the Nevanlinna characteristic for loxodromic functions as well as the Nevanlinna type characteristic for elliptic functions are investigated.
A. Ya. Khrystiyanyn +2 more
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Integrals of subharmonic functions and their differences with weight over small sets on a ray
Математичні Студії, 2020 Let $E$ be a measurable subset in a segment $[0,r]$ in the positive part of the real axis in the complex plane, and $U=u-v$ be the difference of subharmonic functions $u\not\equiv -\infty$ and $v\not\equiv -\infty$ on the complex plane.
B.N. Khabibullin
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Extreme problems in the space of meromorphic functions of finite order in the half plane. II
Математичні Студії, 2020 The extremal problems in the space of meromorphic functions of order $\rho>0$ in upper half-plane are studed. The method for studying is based on the theory of Fourier coefficients of meromorphic functions.
K.G. Malyutin, A.A. Revenko
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On characterizations of main parts of some meromorphic classes of area Nevanlinna [PDF]
Проблемы анализа, 2011 We characterize main parts of Loran expansions of certain meromorphic spaces in the unit disk defined with the help of Nevanlinna characteristic.
Shamoyan R., Haiying L.
doaj
Robust Controller Design Using the Nevanlinna-Pick Interpolation in Gyro Stabilized Pod
Discrete 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
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