Results 21 to 30 of about 2,844,150 (299)

Diametric theorems in sequence spaces [PDF]

open access: yes, 1992
Ahlswede R, Cai N, Zhang Z. Diametric theorems in sequence spaces. Combinatorica. 1992;12(1):1-17.We determine in almost all Manhattan lattices configurations, which for specified diameter have maximal cardinality.
Cai, Ning, Zhang, Zhen, Ahlswede, Rudolf
core   +1 more source

Best Constants between Equivalent Norms in Lorentz Sequence Spaces [PDF]

open access: yes, 2012
We find the best constants in inequalities relating the standard norm, the dual norm, and the norm ∥x∥(p,s):=inf⁡{∑k∥x(k)∥p,s}, where the infimum is taken over all finite representations x=∑kx(k) in the classical Lorentz sequence spaces.
A. N. Marcoci   +10 more
core   +1 more source

Spaces Defined by Sequences [PDF]

open access: yesProceedings 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

Hahn Sequence Space of Modals [PDF]

open access: yesInternational 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

Packing constant for Cesàro-Orlicz sequence spaces [PDF]

open access: yes, 1958
summary:The packing constant is an important and interesting geometric parameter of Banach spaces. Inspired by the packing constant for Orlicz sequence spaces, the main purpose of this paper is calculating the Kottman constant and the packing constant of
Ma, Zhen-Hua   +5 more
core   +1 more source

A Classification of Elements of Sequence Space $Seq(\mathbb{R})$ [PDF]

open access: yesMathematics Interdisciplinary Research
‎The sequence space of all real-valued sequences‎, ‎denoted $Seq(\mathbb{R})$‎, ‎is typically investigated through the lens of infinite-dimensional vector spaces‎, ‎utilizing Banach space norms or Schauder bases‎.
Mohsen Soltanifar
doaj   +1 more source

On topological properties of spaces obtained by the double band matrix

open access: yesOpen 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

On Certain Sequence Spaces [PDF]

open access: yesCanadian 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

A study on Matrix Domain of Riesz-Euler Totient Matrix in the Space of $p$-Absolutely Summable Sequences

open access: yesCommunications 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  

On the Domain of the Fibonacci Difference Matrix

open access: yesMathematics, 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

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