Results 11 to 20 of about 886,896 (272)

Berezin transform on the quantum unit ball [PDF]

open access: yesJournal of Mathematical Physics, 2003
We introduce and study, in the framework of a theory of quantum Cartan domains, a q-analog of the Berezin transform on the unit ball. We construct q-analogs of weighted Bergman spaces, Toeplitz operators, and covariant symbol calculus. In studying the analytical properties of the Berezin transform we introduce also the q-analog of the SU(n,1)-invariant
Shklyarov, Dmitry, Zhang, Genkai
openaire   +4 more sources

Spectral Approximation on the Unit Ball [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2014
Spectral approximation by polynomials on the unit ball is studied in the frame of the Sobolev spaces $W^{s}_p(\ball ...
Li, Huiyuan, Xu, Yuan
openaire   +4 more sources

A sharp bound for the area of minimal surfaces in the unit ball

open access: yesGeometric and Functional Analysis, 2012
Let \Sigma be a k-dimensional minimal surface in the unit ball B^n which meets the unit sphere orthogonally. We show that the area of \Sigma is bounded from below by the volume of the unit ball in R^k. This answers a question posed by R.
Brendle, S.
core   +3 more sources

Contribution of Limb Muscle Power, Flexibility of Limb Muscles and Self-Confidence to the Accuracy of Futsal Shooting

open access: yesJuara, 2023
The objectives of this study are 1) To analyze the contribution of limb muscle power to the accuracy of ball shooting in the women's futsal student activity unit in Semarang 2) To analyze the contribution of limb muscle flexibility to the accuracy of ...
Anny Nur Hidayati   +2 more
doaj   +1 more source

Riquier–Neumann Problem for the Polyharmonic Equation in a Ball

open access: yesMathematics, 2023
The Green’s function of the Riquier–Neumann problem for the polyharmonic equation in the unit ball is constructed. Using the obtained Green’s function, an integral representation of the solution to the Riquier–Neumann problem in the unit ball is found.
Valery Karachik
doaj   +1 more source

Approximation in the Closed Unit Ball [PDF]

open access: yes, 2018
In this expository article, we present a number of classic theorems that serve to identify the closure in the sup-norm of various sets of Blaschke products, inner functions and their quotients, as well as the closure of the convex hulls of these sets.
Mashreghi, Javad, Ransford, Thomas
openaire   +2 more sources

On new sharp theorems for multifunctional BMOA type spaces in bounded pseudoconvex domains

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2020
We provide new equivalent expressions in the unit ball and pseudoconvex domains for multifunctional analytic BMOA type space. We extend in various directions a known theorem of atomic decomposition of BMOA type spaces in the unit ball.
Shamoyan, R.F., Tomashevskaya, E.B.
doaj   +1 more source

Homeomorphisms of the Unit Ball [PDF]

open access: yesProceedings of the American Mathematical Society, 1968
Let En= {x: d(x, 0) 0. Originally, the stronger conclusion j I_ Th-I was expected to hold for all En, n> 1; however, a counterexample was constructed in [2] for n ?2. Note that for n = I this stronger conclusion implies infk || Tk -_I >0 and will be used later.
openaire   +2 more sources

Analytic vector-functions in the unit ball having bounded $\mathbf{L}$-index in joint variables

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2019
In this paper, we consider a class of vector-functions, which are analytic in the unit ball. For this class of functions there is introduced a concept of boundedness of $\mathbf{L}$-index in joint variables, where $\mathbf{L}=(l_1,l_2): \mathbb{B}^2\to ...
V.P. Baksa
doaj   +1 more source

Existencia de Soluciones Radiales para Problemas Semilineales Elípticos Indefinidos

open access: yesSelecciones Matemáticas, 2020
We study the existence of radial solutions of indefinite semilinear elliptic equations in the unit ball in Rn (n>=3) with Dirichlet boundary conditions, whose nonlinear term has the form lamda.m(|x|)f(u) where m(|.|) is radially symmetric, discontinuous ...
Marco Calahorrano, Israel Cevallos
doaj   +1 more source

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