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On a generalization of the corona problem [PDF]
International Journal of Mathematics and Mathematical Sciences, 1986 Let g,f1,…,fm∈H∞(Δ). We provide conditions on f1,…,fm in order that |g(z)|≤|f1(z)|+…+|fm(z)|, for all z in Δ, imply that g, or g2, belong to the ideal generated by f1,…,fm in H∞.
Graziano Gentili, Daniele C. Struppa
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The ultrametric corona problem [PDF]
P-Adic Numbers, Ultrametric Analysis, and Applications, 2009 Let $K$ be a complete ultrametric algebraically closed field and let $A$ be the $K$-Banach algebra of bounded analytic functions in the disk $D:\ |x|
A Escassut
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On the Corona Problem for Strongly Pseudoconvex Domains
Analysis Mathematica, 2022 In this note we solve that the corona problem for strongly pseudoconvex domains under a certain assumption on the level sets of the corona data.
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A New Estimate for the Vector Valued Corona Problem
Journal of Functional Analysis, 2002 In this paper the author gives an improved estimate in the vector valued corona theorem for the unit disk. His proof splits into two parts: first, he resurrects the operator corona theorem from the 1970s, and then he uses a Hilbert space argument, based on a version of Wolff's ideas. Since he uses Hilbert space methods, the Riesz representation theorem
Tavan T Trent
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The Bezout-Corona Problem Revisited: Wiener Space Setting [PDF]
Complex Analysis and Operator Theory, 2015 The matrix-valued {Bezout-corona} problem $G(z)X(z)=I_m$, $|z|<1$, is studied in a Wiener space setting, that is, the given function $G$ is an analytic matrix function on the unit {disc} whose Taylor coefficients are absolutely summable and the same is required for the solutions $X$. It turns out that all Wiener solutions can be described explicitly
M A Kaashoek, S Ter Horst, S ter Horst
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Estimates for the corona problem
Journal of Functional Analysis, 1980 Abstract Estimates are given for solutions of the corona problem for H∞ of the upper half plane or unit disk. Roughly speaking, our results assert that if at every point one corona datum is large, then small corona solutions may be obtained. Our methods use heavily the theory of functions of bounded mean oscillation and in particular, a result of ...
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Corona theorem for strictly pseudoconvex domains [PDF]
Opuscula Mathematica, 2021 Nearly 60 years have passed since Lennart Carleson gave his proof of Corona Theorem for unit disc in the complex plane. It was only recently that M. Kosiek and K. Rudol obtained the first positive result for Corona Theorem in multidimensional case. Using
Sebastian Gwizdek
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Structural Modeling of Problem Solving Styles and Corona Anxiety in Students with an Emphasis on the Mediating Role of self-efficacy [PDF]
پژوهشهای علوم شناختی و رفتاری, 2021 The current research aim was purpose conducted the mediating role of self-efficacy in the relationship between problem solving styles and corona anxiety in a correlation design.
houshang garavand
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Chromospheric Jets and Their Properties [PDF]
Iranian Journal of Astronomy and Astrophysics, 2022 In this study we review solar chromospheric jets and characteristics of them. The chromosphere and transition region are the interface between the solar photosphere and the corona, which plays a key role in the formation and acceleration of the solar ...
Ehsan Tavabi, Sima Zeighami
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Cardiac Manifestation of the Patients with Novel Wuhan Coronavirus Infection: A Clinical Summary on Patients in the First Month of Outbreak [PDF]
Liaquat National Journal of Primary Care, 2020 Dear Editor, In December 2019, a new emerging viral disease was firstly reportedfromWuhan,China.Thenovel coronavirus infection is a new febrile illness that is associated with pneumonia [1].
Pathum Sookaromdee, Viroj Wiwanitkit
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