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M. Obradovi? 《Journal of Mathematical Analysis and Applications》2007,336(2):758-767
Let U(λ) denote the class of all analytic functions f in the unit disk Δ of the form f(z)=z+a2z2+? satisfying the condition
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R. Balasubramanian D.J. Prabhakaran 《Journal of Mathematical Analysis and Applications》2004,293(1):355-373
For β<1, let denote the class of all normalized analytic functions f such that
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For normalized analytic functions f in the unit disk Δ, we consider the class
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Jian-Hua Zheng 《Journal of Mathematical Analysis and Applications》2006,313(1):24-37
Let be a transcendental meromorphic function with at most finitely many poles. We mainly investigated the existence of the Baker wandering domains of f(z) and proved, among others, that if f(z) has a Baker wandering domain U, then for all sufficiently large n, fn(U) contains a round annulus whose module tends to infinity as n→∞ and so for some 0<d<1,
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R. Balasubramanian D.J. Prabhakaran 《Journal of Mathematical Analysis and Applications》2007,336(1):542-555
For γ?0 and β<1 given, let Pγ(β) denote the class of all analytic functions f in the unit disk with the normalization f(0)=f′(0)−1=0 and satisfying the condition
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Norbert Ortner 《Bulletin des Sciences Mathématiques》2003,127(10):835-843
L. Hörmander's extension of Ásgeirsson's mean value theorem states that if u is a solution of the inhomogeneous ultrahyperbolic equation (Δx−Δy)u=f, , , then
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L.D. Abreu F. Marcellan S.B. Yakubovich 《Journal of Mathematical Analysis and Applications》2008,341(2):803-812
Motivated by the G.H. Hardy's 1939 results [G.H. Hardy, Notes on special systems of orthogonal functions II: On functions orthogonal with respect to their own zeros, J. London Math. Soc. 14 (1939) 37-44] on functions orthogonal with respect to their real zeros λn, , we will consider, under the same general conditions imposed by Hardy, functions satisfying an orthogonality with respect to their zeros with Jacobi weights on the interval (0,1), that is, the functions f(z)=zνF(z), ν∈R, where F is entire and
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Let λ be a positive number, and let be a fixed Riesz-basis sequence, namely, (xj) is strictly increasing, and the set of functions is a Riesz basis (i.e., unconditional basis) for L2[−π,π]. Given a function whose Fourier transform is zero almost everywhere outside the interval [−π,π], there is a unique sequence in , depending on λ and f, such that the function is continuous and square integrable on (−∞,∞), and satisfies the interpolatory conditions Iλ(f)(xj)=f(xj), . It is shown that Iλ(f)converges to f in , and also uniformly on , as λ→0+. In addition, the fundamental functions for the univariate interpolation process are defined, and some of their basic properties, including their exponential decay for large argument, are established. It is further shown that the associated interpolation operators are bounded on for every p[1,∞]. 相似文献
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M.I. Gil’ 《Linear algebra and its applications》2008,428(4):814-823
The paper deals with an entire matrix-valued function of a complex argument (an entire matrix pencil) f of order ρ(f)<∞. Identities for the following sums of the characteristic values of f are established:
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Fang Jia 《Differential Geometry and its Applications》2007,25(5):433-451
Let be a locally strongly convex hypersurface, given by the graph of a convex function xn+1=f(x1,…,xn) defined in a convex domain Ω⊂Rn. M is called a α-extremal hypersurface, if f is a solution of
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Pedro Ortega Salvador Consuelo Ramírez Torreblanca 《Journal of Mathematical Analysis and Applications》2007,336(1):593-607
We characterize the pairs of weights (u,v) such that the geometric mean operator G1, defined for positive functions f on (0,∞) by
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For a complex number α with let be the class of analytic functions f in the unit disk with f(0)=0 satisfying in , for some convex univalent function in . For any fixed , and we shall determine the region of variability V(z0,α,λ) for f(z0) when f ranges over the classIn the final section we graphically illustrate the region of variability for several sets of parameters z0 and α. 相似文献
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Shin-ichiro Mizumoto 《Journal of Number Theory》2004,105(1):134-149
For j=1,…,n let fj(z) and gj(z) be holomorphic modular forms for such that fj(z)gj(z) is a cusp form. We define a series