Results 11 to 20 of about 92,536 (264)

Bilinear Multipliers on Banach Function Spaces

open access: yesJournal of Function Spaces, 2019
Let X1,X2,X3 be Banach spaces of measurable functions in L0(R) and let m(ξ,η) be a locally integrable function in R2. We say that m∈BM(X1,X2,X3)(R) if Bm(f,g)(x)=∫R∫Rf^(ξ)g^(η)m(ξ,η)e2πidξdη, defined for f and g with compactly supported Fourier transform,
Oscar Blasco
doaj   +3 more sources

A Decomposition of the Dual Space of Some Banach Function Spaces [PDF]

open access: yesJournal of Function Spaces and Applications, 2012
We give a decomposition for the dual space of some Banach Function Spaces as the Zygmund space EXP𝛼 of the exponential integrable functions, the Marcinkiewicz space 𝐿𝑝,∞, and the Grand Lebesgue Space 𝐿𝑝),𝜃.
Claudia Capone, Maria Rosaria Formica
doaj   +3 more sources

Analytic functions in Banach spaces [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1965
Introduction. In [1] and [5] differential calculus is developed for (real or complex) Banach spaces in a dimension-free manner with scarcely more ado than in the 1-dimensional case. Our purpose is to demonstrate that a similar treatment, without reference to dimension, is available for analytic functions (real or complex Banach spaces) with equal ...
E. F. Whittlesey
openalex   +2 more sources

Minimization of Tikhonov Functionals in Banach Spaces [PDF]

open access: yesAbstract and Applied Analysis, 2008
Tikhonov functionals are known to be well suited for obtaining regularized solutions of linear operator equations. We analyze two iterative methods for finding the minimizer of norm‐based Tikhonov functionals in Banach spaces. One is the steepest descent method, whereby the iterations are directly carried out in the underlying space, and the other one ...
Bonesky, Thomas   +4 more
openaire   +4 more sources

A peculiar Banach function space [PDF]

open access: yesProceedings of the American Mathematical Society, 1965
Let (S, E, ,u) be a a-finite measure space. A length function on (S, E, ,u) is a non-negative, extended-real-valued function X on the set P=P(S, E, ,u) of non-negative, real-valued, 2-measurable functions on S such that (1) X(f) = Of = O a.e. (u); (2) X(f+g) ? (f) 1f (f); (5) E C Y, ,ut (E) 0DfEfdA -?< aX (f) for all f CP.
openaire   +2 more sources

Banach spaces of GLT sequences and function spaces

open access: yesThe Electronic Journal of Linear Algebra, 2022
Generalized locally Toeplitz (GLT) sequences of matrices originated from the spectral study of certain partial differential equations. To be more precise, such matrix sequences arise when we numerically approximate either partial differential equations or fractional differential equations using any discretization by local methods (finite differences ...
Kumar, V. B. Kiran   +2 more
openaire   +3 more sources

A function space integral for a Banach space of functionals on Wiener space [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
In an earlier paper the authors established the existence of Cameron and Storvick's function space integral J,(F) for a class of finite-dimensional functionals F. Here we consider a space A of not necessarily finite-dimensional functionals generated by the earlier functionals.
Johnson, G. W., Skoug, D. L.
openaire   +2 more sources

Banach Lattice Structures and Concavifications in Banach Spaces

open access: yesMathematics, 2020
Let ( Ω , Σ , μ ) be a finite measure space and consider a Banach function space Y ( μ ) . We say that a Banach space E is representable by Y ( μ ) if there is a continuous bijection I : Y ( μ ...
Lucia Agud   +3 more
doaj   +1 more source

Żuk’s criterion for Banach spaces and random groups

open access: yesForum of Mathematics, Sigma, 2023
We prove a Banach version of Żuk’s criterion for groups acting on partite (i.e., colorable) simplicial complexes. Using this new criterion, we derive a new fixed point theorem for random groups in the Gromov density model with respect to several classes ...
Izhar Oppenheim
doaj   +1 more source

Symmetric polynomials on Banach spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
A survey of general results about symmetric polynomials on Banach spaces and rearrangement-invariant function spaces and some new results in this area are given. Some applications to Banach algebras are represented.
I. V. Chernega
doaj   +1 more source

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