Results 71 to 80 of about 8,297,223 (199)

On q-Pell sequence spaces: A study of operator ideals and geometric properties

Kuwait Journal of Science
The matrix \( \mathcal{P}(q) = \{\Psi_{\lambda \mu}(q)\}_{\lambda, \mu \in \mathbb{N}} \), called the \( q \)-Pell matrix, with elements determined by \[ \mathcal{P}(q) = \begin{cases} \dfrac{2~q^{\mu-1}~\Psi{_\mu(q)}}{\Psi{_{\lambda+1}(q)}+\Psi{_ ...
Shiva Shah, Bipan Hazarika
doaj   +1 more source

On some binomial B ( m ) $B^{(m)}$ -difference sequence spaces

Journal of Inequalities and Applications, 2017
In this paper, we introduce the binomial sequence spaces b 0 a , b ( B ( m ) ) $b^{a,b}_{0}(B^{(m)})$ , b c a , b ( B ( m ) ) $b^{a,b}_{c}(B^{(m)})$ and b ∞ a , b ( B ( m ) ) $b^{a,b}_{\infty}(B^{(m)})$ by combining the binomial transformation and ...
Jian Meng, Meimei Song
doaj   +1 more source

Some Paranormed Sequence Spaces Which Involve Arithmetic Divisor Sum Function

Journal of Function Spaces, Volume 2026, Issue 1, 2026.
Let Dr, r ≥ 0, be a triangle and q = (qj) be a bounded sequence of strictly positive numbers. In this paper, we study the algebraic and topological properties of the paranormed sequence space ℓDr,q, generated by the triangle Dr over Maddox′s space ℓ(q). We identify the Schauder basis as well as the α‐, β‐, and γ‐duals of the space ℓDr,q. One section is
Ting Gan, Taja Yaying, Orhan Tuğ, Ömer Kisi, Qing-Bo Cai, Nikhil Khanna   +5 more
wiley   +1 more source

On Motzkin sequence spaces via q-analog and compact operators

Demonstratio Mathematica
We aim to develop a qq-analog of recently introduced Motzkin sequence spaces by Erdem et al. [Motzkin sequence spaces and Motzkin core, Numer. Funct. Anal. Optim. 45 (2024), no.
Yaying Taja, Mursaleen Mohammad
doaj   +1 more source

Exact and Approximate Controllability for Backward Fractional Integro‐Differential Equations With History‐Dependent Operators

Journal of Function Spaces, Volume 2026, Issue 1, 2026.
This paper is devoted to the analysis of controllability for a class of backward fractional integro‐differential equations involving history‐dependent operators, which arise naturally in systems with memory effects. The study begins with the formulation of an appropriate functional framework, within which the concept of approximate controllability is ...
Ghadah Albeladi, Hasanen A. Hammad, Baowei Feng   +2 more
wiley   +1 more source

Binomial difference sequence spaces of order m

Advances in Difference Equations, 2017
In this paper, we introduce the binomial sequence spaces b 0 r , s ( ∇ ( m ) ) $b^{r,s}_{0}(\nabla^{(m)})$ , b c r , s ( ∇ ( m ) ) $b^{r,s}_{c}(\nabla^{(m)})$ and b ∞ r , s ( ∇ ( m ) ) $b^{r,s}_{\infty}(\nabla^{(m)})$ by combining the binomial ...
Jian Meng, Meimei Song
doaj   +1 more source

Fractional‐Order Modeling and Parameter Estimation of Schistosomiasis Transmission With Environmental Factors and Concomitant Immunity

Journal of Mathematics, Volume 2026, Issue 1, 2026.
Schistosomiasis remains a major public health burden in endemic regions where repeated contact with cercariae‐contaminated freshwater sustains transmission. This study proposes a fractional‐order schistosomiasis model based on the Atangana–Baleanu–Caputo (ABC) derivative with a Mittag‐Leffler kernel.
Ateq Alsaadi, Smritijit Sen
wiley   +1 more source

A priori estimate, existence, and uniqueness of solutions for a third-order differential system with coupled integral boundary conditions

Nonlinear Analysis
This paper investigates a priori estimate, existence, and uniqueness of solutions for a third-order differential system with coupled integral boundary conditions.
Sergey Smirnov
doaj   +1 more source

Juliusz Schauder (1899-1943)

, 2022
Juliusz Schauder był polskim matematykiem i członkiem tzw. Lwowskiej Szkoły Matematycznej. W latach 1925-1939 pracował w gimnazjach, a od 1928 roku był asystentem na Uniwersytecie Jana Kazimierza we Lwowie, najpierw u Banacha i później u Steinhausa ...
Maligranda, Lech,, Maligranda, Lech
core   +1 more source

Frames and Schauder bases

, 1997
We present a rather surprising example of a framewhich does not contain a Schauder basis.
Christensen, Ole, Casazza, P., Casazza, P   +2 more
core