Results 1 to 10 of about 14,860 (196)

A Multivariate Blaschke-Based Mode Decomposition Approach for Gear Fault Diagnosis [PDF]

open access: yesSensors
Existing multivariate signal decomposition methods insufficiently account for the mechanical characteristics of gear systems, limiting their capability in fault feature extraction.
Xianbin Zheng   +3 more
doaj   +2 more sources

Interpolating Blaschke products [PDF]

open access: bronzePacific Journal of Mathematics, 1996
The problem of characterizing the closed linear span of the interpolating Blaschke products arose in the thesis of P. Jones [1978] and in Bounded analytic functions (1984; Zbl 0542.30003) by \textit{J. Garnett}, p. 430. We prove that any bounded analytic function on the unit disk \(\mathbb{D}\) which extends to be continuous on \(\partial\mathbb{C ...
Donald E. Marshall, Arne Stray
openalex   +3 more sources

Tongues in degree 4 Blaschke products [PDF]

open access: green, 2016
The goal of this paper is to investigate the family of Blasche products $B_a(z)=z^3\frac{z-a}{1-\bar{a}z}$, which is a rational family of perturbations of the doubling map. We focus on the tongue-like sets which appear in its parameter plane.
Jordi Canela   +2 more
openalex   +3 more sources

Random Blaschke products [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1990
Let { θ n ( ω ) } \{ {\theta _n}(\omega )\} be a sequence of independent random variables uniformly distributed on [ 0 , 2 π ] [0,2\pi ] , and let z
W. G. Cochran
openalex   +2 more sources

Color Visualization of Blaschke Product Mappings [PDF]

open access: greenComplex Variables and Elliptic Equations, 2008
A visualization of Blaschke product mappings can be obtained by treating them as canonical projections of covering Riemann surfaces and finding fundamental domains and covering transformations corresponding to these surfaces. A working tool is the technique of simultaneous continuation we introduced in previous papers.
Cristina Ballantine, Dorin Ghişa
openalex   +3 more sources

Exploring parameter spaces in complex dynamics

open access: yesSelecciones Matemáticas, 2023
We show the structure of the parameter space for a family of rational maps containing Blaschke products. Through numerical simulations using the orbit of a single critical point, we reveal the existence of infinitely many Mandelbrot-like sets along the ...
Pedro Iván Suárez Navarro
doaj   +1 more source

Asymmetric Truncated Hankel Operators: Rank One, Matrix Representation

open access: yesJournal of Function Spaces, 2021
Asymmetric truncated Hankel operators are the natural generalization of truncated Hankel operators. In this paper, we determine all rank one operators of this class.
Firdaws Rahmani, Yufeng Lu, Ran Li
doaj   +1 more source

Analytic in the unit polydisc functions of bounded L-index in direction

open access: yesМатематичні Студії, 2023
The concept of bounded $L$-index in a direction $\mathbf{b}=(b_1,\ldots,b_n)\in\mathbb{C}^n\setminus\{\mathbf{0}\}$ is generalized for a class of analytic functions in the unit polydisc, where $L$ is some continuous function such that for every $z=(z_1 ...
A. Bandura, T. Salo
doaj   +1 more source

On Some New Results in Large Area Nevanlinna Spaces in the Unit Disk

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2023
The study of various infinite products in various spaces of analytic functions in the unit disk is a well known and well studied problem of complex function theory in the unit disk.
Shamoyan, R., Mihi´c, O.
doaj   +1 more source

On partial isometries with circular numerical range

open access: yesConcrete Operators, 2021
In their LAMA 2016 paper Gau, Wang and Wu conjectured that a partial isometry A acting on ℂn cannot have a circular numerical range with a non-zero center, and proved this conjecture for n ≤ 4. We prove it for operators with rank A = n − 1 and any n.
Wegert Elias, Spitkovsky Ilya
doaj   +1 more source

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