Results 21 to 30 of about 673 (226)
Multipliers of trigonometric series and pointwise convergence [PDF]
Transactions of the American Mathematical Society, 1969 Introduction. In a recent paper M. Weiss and A. Zygmund [7] have studied the pointwise convergence of a trigonometric series a einx when the multipliers An= Injti (y real) are applied to it. The proof of their result makes use of Peano derivatives in LP, which bear a close connection with the tP classes of A. P. Calderon and A. Zygmund [1].
Riviere, N. M., Sagher, Y.
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Pointwise multipliers between spaces of analytic functions
Quaestiones Mathematicae, 2023 A Banach space X of analytic function in D, the unit disc in C, is said to be admissible if it contains the polynomials and convergence in X implies uniform convergence in compact subsets of D.If X and Y are two admissible Banach spaces of analytic functions in D and g is a holomorphic function in D, g is said to be a multiplier from X to Y if g · f ...
Daniel Girela, Noel Merchán
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Forward integration, convergence and non-adapted pointwise multipliers [PDF]
Infinite Dimensional Analysis, Quantum Probability and Related Topics, 2015 In this paper we study the forward integral of operator-valued processes with respect to a cylindrical Brownian motion. In particular, we provide conditions under which the approximating sequence of processes of the forward integral, converges to the stochastic integral process with respect to Sobolev norms of smoothness α < 1/2. This result will be
Pronk, Matthijs, Veraar, Mark
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Pointwise multipliers on martingale Campanato spaces [PDF]
Studia Mathematica, 2014 We introduce generalized Campanato spaces $\mathcal{L}_{p,ϕ}$ on a probability space $(Ω,\mathcal{F},P)$, where $p\in[1,\infty)$ and $ϕ:(0,1]\to(0,\infty)$. If $p=1$ and $ϕ\equiv1$, then $\mathcal{L}_{p,ϕ}=\mathrm{BMO}$. We give a characterization of the set of all pointwise multipliers on $\mathcal{L}_{p,ϕ}$.
Nakai, Eiichi, Sadasue, Gaku
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Modeling Variational Inpainting Methods With Splines
Frontiers in Applied Mathematics and Statistics, 2019 Mathematical methods of image inpainting often involve the discretization of a given continuous model. Typically, this is done by a pointwise discretization.
Florian Boßmann +2 more
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Estimates of Reachable Set and Sufficient Optimality Condition for Discrete Control Problems
Известия Иркутского государственного университета: Серия "Математика", 2017 The paper follows the “canonical optimality theory” (in the terminology due to A. A. Milyutin) for discrete-time optimal control problems. In respect of optimality conditions, the feature of this approach is to employ sets of strongly monotone functions ...
S. P. Sorokin
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Homogeneity Property of Besov and Triebel-Lizorkin Spaces
Journal of Function Spaces and Applications, 2012 We consider the classical Besov and Triebel-Lizorkin spaces defined via differences and prove a homogeneity property for functions with bounded support in the frame of these spaces. As the proof is based on compact embeddings between the studied function
Cornelia Schneider, Jan Vybíral
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Pointwise multipliers on weak Orlicz spaces
Hiroshima Mathematical Journal, 2020 We characterize the pointwise multipliers from a weak Orlicz space to another weak Orlicz space.
Kawasumi, Ryota, Nakai, Eiichi
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Failure of the trilinear operator space Grothendieck theorem
Discrete Analysis, 2019 Failure of the trilinear operator space Grothendieck theorem, Discrete Analysis 2019:8, 16 pp. Let $\beta:\ell_\infty^n\times \ell_\infty^n\to\mathbb C$ be a bilinear form.
Jop Briët, Carlos Palazuelos
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Pointwise multipliers and their properties
, 2023 Wydział Matematyki i InformatykiCelem tej rozprawy jest opis przestrzeni mnożników punktowych działających pomiędzy pewnymi klasami krat Banacha oraz sformułowanie pewnych warunków gwarantujących słabą zwartość operatorów mnożenia punktowego.
Tomaszewski, Jakub
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