Results 51 to 60 of about 10,990,525 (122)

Maximizing daily rainfall prediction accuracy with maximum overlap discrete wavelet transform‐based machine learning models

open access: yesInternational Journal of Climatology, Volume 44, Issue 10, Page 3405-3426, August 2024.
This study explores the utilization of maximum overlap fractional wavelet transform (MODWT)‐based machine learning models to enhance the precision of daily precipitation predictions. The primary objective of this research is to leverage cutting‐edge forecasting techniques to analyse meteorological data.
Kübra Küllahcı   +1 more
wiley   +1 more source

Dual pairs of sequence spaces [PDF]

open access: yes, 2001
The paper aims to develop for sequence spaces E a general concept for reconciling certain results, for example inclusion theorems, concerning generalizations of the Köthe-Toeplitz duals E×(×∈{α,β}) combined with dualities (E,G),G⊂E×, and the SAK-property
Johann Boos, Toivo Leiger
core   +2 more sources

Weighted spaces of holomorphic functions and sequence spaces

open access: yes, 1997
Our aim in this note is twofold. Firstly we show that, given any Köthe echelon space of order one, a weighted limit of Banach spaces of holomorphic functions on the disc can be constructed such that the strong dual of the sequence space is isomorphic to ...
Bonet, Josè, Vogt, Dietmar
core   +1 more source

Duals of vector-valued Köthe function spaces

open access: yes, 1992
Let Λ be a perfect Köthe function space in the sense of Dieudonné, and Λ× its Köthe-dual. Let E be a normed space. Then the topological dual of the space Λ(E) of Λ-Bochner integrable functions equals the corresponding Λ×(E′) if and only if E′ has the ...
Florencio Lora, Miguel   +2 more
core   +1 more source

On Köthe-Toeplitz duals of some new and generalized difference sequence spaces

open access: yes, 2012
In this paper we de¯ne the sequence spaces 4mv \(∆_m ^{v,r}\)(lꝏ), \(∆_m ^{v,r}\)(c) and \(∆_m ^{v,r}\)(c0), (m ∈ N, r ∈ R), and have studied some of their topological properties and have computed their Köthe-Toeplitz ...
Chaudhry, V.K., Ansari, A.A.
core  

Grand Lebesgue sequence spaces

open access: yes, 2018
We introduce grand Lebesgue sequence spaces and study various operators of harmonic analysis in these spaces, e.g., maximal, convolution, Hardy, Hilbert, and fractional operators, among others.
Stefan Samko   +2 more
core   +1 more source

Double sequence spaces characterized by lacunary sequences [PDF]

open access: yes, 2007
In 1989, Das and Patel considered known sequence spaces to define two new sequence spaces called lacunary almost convergent and lacunary strongly almost convergent sequence spaces, and proved two inclusion theorems with respect to those spaces.
Ekrem Savaş   +3 more
core   +1 more source

Relationships between 𝜆-nuclearity and pseudo-𝜇-nuclearity

open access: yes, 1975
It is shown that for any Köthe space λ \lambda , λ \lambda -nuclearity coincides with pseudo- λ λ × \lambda {\lambda ^ \times } -nuclearity.
William B. Robinson
core   +1 more source

On the Bell matrix operator in sequence spaces c and c 0

open access: yes
In this work, new sequence spaces are introduced via the recently formulated Bell matrix, their Köthe–Toeplitz duals are determined, and a corresponding Schauder basis is established.
Mikail Et   +3 more
core   +1 more source

On nuclearity of Köthe spaces [PDF]

open access: yes, 2006
In this study we observe that the Köthe spaces Klp(A) is nuclear when it is complementedly embedded in Klq (B) for 1 p ...
Zakharyuta, Vyacheslav   +1 more
core   +1 more source

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