Results 21 to 30 of about 17,142 (213)
Approximation numbers of composition operators on Hp
Concrete Operators, 2015 give estimates for the approximation numbers of composition operators on the Hp spaces, 1 ≤ p < ∞
Li Daniel +2 more
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Smale's mean value conjecture for finite Blaschke products [PDF]
, 2016 Motivated by a dictionary between polynomials and finite Blaschke products, we study both Smale's mean value conjecture and its dual conjecture for finite Blaschke products in this paper.
Ng, Tuen-Wai, Zhang, Yongquan
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Pontryagin de Branges Rovnyak spaces of slice hyperholomorphic functions [PDF]
, 2012 We study reproducing kernel Hilbert and Pontryagin spaces of slice hyperholomorphic functions which are analogs of the Hilbert spaces of analytic functions introduced by de Branges and Rovnyak.
Alpay, Daniel +2 more
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A Novel Two-Dimensional Unwinding Decomposition for Image Signals
IEEE Access, 2019 This paper presents a new two-dimensional (2D) signal analysis method, namely partial unwinding adaptive Fourier decomposition. Because of its efficiency and accuracy it has great ability in practice.
Yanting Li, Junwei Jin
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Semicrossed products of the disk algebra and the Jacobson radical
, 2012 We consider semicrossed products of the disk algebra with respect to endomorphisms defined by finite Blaschke products. We characterize the Jacobson radical of these operator algebras.
Anchalee Khemphet +10 more
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Recursive interpolating sequences
Open Mathematics, 2018 This paper is devoted to pose several interpolation problems on the open unit disk 𝔻 of the complex plane in a recursive and linear way. We look for interpolating sequences (zn) in 𝔻 so that given a bounded sequence (an) and a suitable sequence (wn ...
Tugores Francesc
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Composition and decomposition of indestructible Blaschke products
, 2013 We prove that the composition of two indestructible Blaschke products is again an indestructible Blaschke product. We also show that if an indestructible Blaschke product is the composition of two bounded analytic functions, then both functions are ...
Kraus, Daniela, Roth, Oliver
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, 2007 We establish an extension of Liouville's classical representation theorem for solutions of the partial differential equation $\Delta u=4 e^{2u}$ and combine this result with methods from nonlinear elliptic PDE to construct holomorphic maps with ...
Kraus, Daniela, Roth, Oliver
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The radial behavior of Blaschke products [PDF]
Proceedings of the American Mathematical Society, 1985 The paper extends results of G. T. Cargo and of C. L. Belna, F. W. Carroll and G. Piranian on the existence of Blaschke products with prescribed radial limits at a prescribed finite or countable set of points on the unit circle. The extension permits the prescription of the radial cluster set at each point of a prescribed countable set on the unit ...
Belna, C. L., Colwell, P., Piranian, G.
openaire +2 more sources
Best weighted approximation of some kernels on the real axis
Researches in MathematicsWe calculate the exact value and find the polynomial of the best weighted polynomial approximation of kernels of the form $\frac {A+Bt}{(t^2+\lambda^2)^{s+1}}$, where $A$ and $B$ are fixed complex numbers, $\lambda>0$, $s\in {\mathbb N}$, in the mean ...
S.O. Chaichenko +2 more
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