Results 41 to 50 of about 9,818 (190)

Some strongly bounded classes of Banach spaces [PDF]

open access: yes, 2006
We show that the classes of separable reflexive Banach spaces and of spaces with separable dual are strongly bounded. This gives a new proof of a recent result of E. Odell and Th.
Dodos, Pandelis, Ferenczi, Valentin
core   +1 more source

Restricting a Schauder Basis to a Set of Positive Measure [PDF]

open access: yesTransactions of the American Mathematical Society, 1973
Let { f n
openaire   +2 more sources

Note on bases in algebras of analytic functions on Banach spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2019
Let $\{P_n\}_{n=0}^\infty$ be a sequenceof continuous algebraically independent  homogeneous polynomials on a complex Banach space $X.$ We consider the following question: Under which conditions polynomials $\{P_1^{k_1}\cdots P_n^{k_n}\}$ form a Schauder
I.V. Chernega, A.V. Zagorodnyuk
doaj   +1 more source

Schauder bases in Dirac modules over quaternions [PDF]

open access: yes, 2013
Dirac modules over the quaternion skew field are investigated on a compact domain relative to the supremum norm and Hardy's norm with the parameter ...
Ludkovsky, Sergey V.
core   +1 more source

g-Bases in Hilbert Spaces

open access: yesAbstract and Applied Analysis, 2012
The concept of g-basis in Hilbert spaces is introduced, which generalizes Schauder basis in Hilbert spaces. Some results about g-bases are proved. In particular, we characterize the g-bases and g-orthonormal bases. And the dual g-bases are also discussed.
Xunxiang Guo
doaj   +1 more source

Fractional integrals, derivatives and integral equations with weighted Takagi–Landsberg functions

open access: yesNonlinear Analysis, 2020
In this paper, we find fractional Riemann–Liouville derivatives for the Takagi–Landsberg functions. Moreover, we introduce their generalizations called weighted Takagi–Landsberg functions, which have arbitrary bounded coefficients in the expansion under ...
Vitalii Makogin, Yuliya Mishura
doaj   +1 more source

Maximal left ideals of the Banach algebra of bounded operators on a Banach space [PDF]

open access: yes, 2013
We address the following two questions regarding the maximal left ideals of the Banach algebra $\mathscr{B}(E)$ of bounded operators acting on an infinite-dimensional Banach pace $E$: (Q1) Does $\mathscr{B}(E)$ always contain a maximal left ideal which
Dales, H. G.   +4 more
core   +2 more sources

Subseries convergence in spaces with a Schauder basis [PDF]

open access: yesProceedings of the American Mathematical Society, 1995
Summary: Let \(E\) be a Hausdorff topological vector space having a Schauder basis \(\{b_ i\}\) and coordinate functionals \(\{f_ i\}\). Let \(\sigma(E, F)\) be the weak topology on \(E\) induced by \(F= \{f_ i: i\in \mathbb{N}\}\). We show that if a series in \(E\) is subseries convergent with respect to \(\sigma(E, F)\), then it is subseries ...
openaire   +1 more source

Numerical Treatment of Fixed Point Applied to the Nonlinear Fredholm Integral Equation

open access: yesFixed Point Theory and Applications, 2009
The authors present a method of numerical approximation of the fixed point of an operator, specifically the integral one associated with a nonlinear Fredholm integral equation, that uses strongly the properties of a classical Schauder basis in the Banach
M. I. Berenguer   +3 more
doaj   +2 more sources

Amalgamations of classes of Banach spaces with a monotone basis

open access: yes, 2015
It was proved by Argyros and Dodos that, for many classes $ C $ of separable Banach spaces which share some property $ P $, there exists an isomorphically universal space that satisfies $ P $ as well.
Kurka, Ondřej
core   +1 more source

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