Results 71 to 80 of about 800 (199)

Tauberian theorems for Bonsall core in sequence spaces

open access: yes, 2001
The authors investigate cores K(x) of sequences x that are defined by different Bonsall functionals π. Two general Tauberian core theorems are proved. These are applied to special functionals π and matrix methods A.
Tali, Anne, Loone, Leiki
core   +1 more source

The Liouville theorem for a class of Fourier multipliers and its connection to coupling

open access: yesBulletin of the London Mathematical Society, Volume 56, Issue 7, Page 2374-2394, July 2024.
Abstract The classical Liouville property says that all bounded harmonic functions in Rn$\mathbb {R}^n$, that is, all bounded functions satisfying Δf=0$\Delta f = 0$, are constant. In this paper, we obtain necessary and sufficient conditions on the symbol of a Fourier multiplier operator m(D)$m(D)$, such that the solutions f$f$ to m(D)f=0$m(D)f=0$ are ...
David Berger   +2 more
wiley   +1 more source

On logarithmic averages of sequences and its applications

open access: yesKuwait Journal of Science, 2016
In this paper, we investigate summability methods of logarithmic averages of the numerical sequences and its applications such as Tauberian type theorems.
Umit Totur, Muhammet A. Okur
doaj  

Generalized riesz method and convergence acceleration

open access: yesMathematical Modelling and Analysis, 2004
Several propositions on A‐boundedness for generalized Riesz method (5ft, Pn), where Pn are linear bounded operators from Banach space X into X, are proved.
I. Tammeraid
doaj   +1 more source

Multidimensional Tauberian theorems for vector-valued distributions

open access: yes, 2014
We prove several Tauberian theorems for regularizing transforms of vector-valued distributions. The regularizing transform of f is given by the integral transform M-phi(f)(x, y) = (f * phi(y))(x), (x, y) is an element of R-n x R+, with kernel phi(y) (t) =
Pilipović, Stevan, Vindas Diaz, Jasson
core   +1 more source

A Remark on Wiener's Tauberian Theorem [PDF]

open access: yesProceedings of the American Mathematical Society, 1965
2. P. J. Cohen, The independence of the continuum hypothesis, Proc. Nat. Acad. Sci. U. S. A. 50 (1963), 1143-1148; 51 (1964), 105-110. 3. H. J. Keisler, Ultraproducts and saturated models, Indag. Math. 26 (1964), 178186. 4. M. Morley and R. Vaught, Homogeneous universal models, Math. Scand. 11 (1962), 37-57. 5. A. Tarski and R.
openaire   +1 more source

TAUBERIAN REMAINDER THEOREMS FOR ITERATIONS OF METHODS OF WEIGHTED MEANS

open access: yes, 2019
In this paper we prove some Tauberian remainder theorems on lambda-bounded sequences for iterations of methods of weighted ...
Sezer, Sefa Anil, Canak, Ibrahim
core   +2 more sources

A Weighted Tauberian Theorem

open access: yesJournal of Fourier Analysis and Applications, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Uniform Toeplitz matrices

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
We characterize all infinite matrices of bounded linear operators on a Banach space which preserve the limits of uniformly convergent sequences defined on an infinite set.
I. J. Maddox
doaj   +1 more source

Tauberian theorems for statistically (C,1,1) summable double sequences of fuzzy numbers

open access: yesOpen Mathematics, 2017
In this paper, we prove that a bounded double sequence of fuzzy numbers which is statistically convergent is also statistically (C, 1, 1) summable to the same number. We construct an example that the converse of this statement is not true in general.
Önder Zerrin   +2 more
doaj   +1 more source

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