Results 11 to 20 of about 107,533 (264)
Characterizations of Matrix and Compact Operators on BK Spaces
Universal Journal of Mathematics and Applications, 2023 In the present paper, by estimating operator norms, we give some characterizations of infinite matrix classes $\left( \left\vert E_{\mu }^{r}\right\vert _{q},\Lambda\right) $ and $\left( \left\vert E_{\mu }^{r}\right\vert _{\infty },\Lambda\right ...
Fadime Gökçe
doaj +1 more source
On some spaces of summable sequences and their duals
International Journal of Mathematics and Mathematical Sciences, 1986 Suppose that S is the space of all summable sequences α with ‖α‖S=supn≥0|∑j=n∞αj| and J the space of all sequences β of bounded variation with ‖β‖J=|β0|+∑j=1∞|βj−βj−1|.
Geraldo Soares de Souza, G. O. Golightly
doaj +1 more source
On topological properties of spaces obtained by the double band matrix
Open Mathematics, 2017 Let λ denote any one of the spaces ℓ∞ and ℓp and λ(Ť) be the domain of the band matrix Ť. We study ℓp(Ť) for 1 ≤ p ≤ ∞ and give some inclusions and its topological properties.
Zeren Suzan, Bektaş Çiğdem
doaj +1 more source
Multipliers of sequence spaces
Concrete Operators, 2017 This paper is selective survey on the space lAp and its multipliers.
Cheng Raymond +2 more
doaj +1 more source
Spaces Defined by Sequences [PDF]
Proceedings of the American Mathematical Society, 1976 The biquotient, countably biquotient, hereditarily quotient, and quotient images of q q -spaces are classified.
openaire +2 more sources
Communications in Advanced Mathematical Sciences, 2021 In this study, a special lower triangular matrix derived by combining Riesz matrix and Euler totient matrix is used to construct new Banach spaces. $\alpha-$,$\beta-$,$\gamma-$duals of the resulting spaces are obtained and some matrix operators ...
Mehmet Akif Bayrakdar, Merve İlkhan
doaj
Hahn Sequence Space of Modals [PDF]
International Scholarly Research Notices, 2014 The history of modal intervals goes back to the very first publications on the topic of interval calculus. The modal interval analysis is used in Computer graphics and Computer Aided Design (CAD), namely, the computation of narrow bounds on Bezier and B-Spline curves.
Balasubramanian, T. +1 more
openaire +3 more sources
On Certain Sequence Spaces [PDF]
Canadian Mathematical Bulletin, 1981 AbstractIn this paper define the spaces l∞(Δ), c(Δ), and c0(Δ), where for instance l∞(Δ) = {x=(xk):supk |xk -xk + l|< ∞}, and compute their duals (continuous dual, α-dual, β-dual and γ-dual). We also determine necessary and sufficient conditions for a matrix A to map l∞(Δ) or c(Δ) into l∞ or c, and investigate related questions.
openaire +2 more sources
On the Domain of the Fibonacci Difference Matrix
Mathematics, 2019 Matrix F^ derived from the Fibonacci sequence was first introduced by Kara (2013) and the spaces lp(F) and l∞(F); (1 ≤ p < ∞) were examined. Then, Başarır et al. (2015) defined the spaces c0(F) and c(F) and Candan (2015) examined the
Fevzi Yaşar, Kuddusi Kayaduman
doaj +1 more source
International Journal of Mathematics and Mathematical Sciences, 1997 Certain spaces of X-valued sequences are introduced and some of their properties are investigated. Köthe- Toeplitz duals of these spaces are examined.
S. Pehlivan
doaj +1 more source