Results 21 to 30 of about 482 (178)

A New Paranormed Sequence Space Defined by Regular Bell Matrix

open access: yesDera Natung Government College Research Journal, 2023
This paper aims to construct a new paranormed sequence space by the aid of a regular matrix of Bell numbers. As well, its special duals such as α−,β−,γ−  duals are presented and Schauder basis is determined.
Murat Karakaş, Muhammet Cihat Dağlı
doaj   +1 more source

L p -maximal regularity on Banach spaces with a Schauder basis [PDF]

open access: yesArchiv der Mathematik, 2002
14 ...
Kalton, N. J., Lancien, G.
openaire   +2 more sources

Some New Characterizations and g-Minimality and Stability of g-Bases in the Hilbert Spaces

open access: yesJournal of Function Spaces and Applications, 2013
The concept of g-basis in the Hilbert spaces is introduced by Guo (2012) who generalizes the Schauder basis in the Hilbert spaces. g-basis plays the similar role in g-frame theory to that the Schauder basis plays in frame theory.
Xunxiang Guo
doaj   +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

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

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

Operators constructed by means of basic sequences and nuclear matrices

open access: yesAdvances in Difference Equations, 2019
In this work, we establish an approach to constructing compact operators between arbitrary infinite-dimensional Banach spaces without a Schauder basis. For this purpose, we use a countable number of basic sequences for the sake of verifying the result of
Ahmed Morsy   +3 more
doaj   +1 more source

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