Results 1 to 10 of about 183 (170)

Bicomplex Landau and Ikehara Theorems for the Dirichlet Series

open access: yesJournal of Mathematics, 2022
The aim of this paper is to generalize the Landau-type Tauberian theorem for the bicomplex variables. Our findings extend and improve on previous versions of the Ikehara theorem.
Ritu Agarwal   +4 more
doaj   +2 more sources

On the Euler method of summability and concerning Tauberian theorems

open access: yesCumhuriyet Science Journal, 2021
For any two regular summability methods (U) and (V), the condition under which V-limx_n=λ implies U-limx_n=λ is called a Tauberian condition and the corresponding theorem is called a Tauberian theorem.
İbrahim Çanak, Sefa Anıl Sezer
doaj   +1 more source

Some Results on Cesàro summability in Intuitionistic Fuzzy $n$-normed linear Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2022
The concept of summability plays a central role in finding formal solutions of partial differential equations. In this paper, we introduce the concept of Cesàro summability in an intuitionistic fuzzy $n$-normed linear space (IFnNLS).
Pradip Debnath
doaj   +1 more source

Tauberian theorems for weighted means of double sequences in intuitionistic fuzzy normed spaces [PDF]

open access: yesYugoslav Journal of Operations Research, 2022
We define weighted mean summability method of double sequences in intuitionistic fuzzy normed spaces(IFNS), and obtain necessary and sufficient Tauberian conditions under which convergence of double sequences in IFNS follows from their weighted mean ...
Narayan Mishra Lakshmi   +3 more
doaj   +1 more source

A Mean Ergodic Theorem for Affine Nonexpansive Mappings in Nonpositive Curvature Metric Spaces

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
In this paper, we consider the orbits of an affine nonexpansive mapping in Hadamard (nonpositive curvature metric) spaces and prove an ergodic theorem for the inductive mean, which extends the von Neumann linear ergodic theorem.
Khatibzadeh Hadi, Pouladi Hadi
doaj   +1 more source

Some remarks on Cesaro summability in neutrosophic normed spaces [PDF]

open access: yesNeutrosophic Sets and Systems, 2023
In this paper, we define the notion of a generalized summability, called Ces`aro summability in neutrosophic normed spaces (briefly NNS). We obtain conditions under which ordinary summability follows from Cesaro summability. Later, we define a concept of
Vijay Kumar   +2 more
doaj   +1 more source

Sobre el Teorema Tauberiano de W. Rudin

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2012
Using W. Rudin’s method it is shown that the tauberian theorem can be generalized to several kernels other than the Poisson kernel. We also proof an inverse of the tauberian theorem, that is, an abelian theorem.
Marielos Mora
doaj   +1 more source

An application of results by Hardy, Ramanujan and Karamata to Ackermannian functions [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2003
The Ackermann function is a fascinating and well studied paradigm for a function which eventually dominates all primitive recursive functions. By a classical result from the theory of recursive functions it is known that the Ackermann function can be
Andreas Weiermann
doaj   +2 more sources

Converse Theorems for the Cesàro Summability of Improper Integrals

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020
In thispaper we prove converse theorems to obtain usual convergence of improperintegrals from Cesàro summability.
Sefa Anıl Sezer, Rahmet Savaş
doaj   +1 more source

Comparison of speeds of convergence in Riesz‐type families of summability methods. II

open access: yesMathematical Modelling and Analysis, 2010
Certain summability methods for functions and sequences are compared by their speeds of convergence. The authors are extending their results published in paper [9] for Riesz‐type families {Aα} (α > α0 ) of summability methods Aα .
Anna Šeletski, Anne Tali
doaj   +1 more source

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