Results 61 to 70 of about 2,451 (228)

On some Banach space sequences [PDF]

Bulletin of the Australian Mathematical Society, 1982
We introduce the Banach space of vector valued sequences lp, q(E), 1 ≤ p, q ≤ ∞, where E is a Banach space. Then we study the relation between lp, q(E) and the Schur multipliers of lpE, where E is taken to be some lr.
openaire   +1 more source

Linear Toroidal‐Inertial Waves on A Differentially Rotating Sphere with Application to Helioseismology: Modeling, Forward and Inverse Problems

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This paper develops a mathematical framework for interpreting observations of solar inertial waves in an idealized setting. Under the assumption of purely toroidal linear waves on the sphere, the stream function of the flow satisfies a fourth‐order scalar equation.
Tram Thi Ngoc Nguyen, Damien Fournier, Laurent Gizon, Thorsten Hohage   +3 more
wiley   +1 more source

Matrix Mappings on the Domains of Invertible Matrices

Journal of Function Spaces and Applications, 2013
We focus on sequence spaces which are matrix domains of Banach sequence spaces. We show that the characterization of a random matrix operator , where and are matrix domains with invertible matrices and , can be reduced to the characterization of the ...
Muhammed Altun
doaj   +1 more source

Universality, complexity and asymptotically uniformly smooth Banach spaces [PDF]

, 2022
For ...
Lancien, Gilles, Causey, R, Causey, Ryan M.   +2 more
core   +1 more source

On the Existence of Solutions of Dynamic Equations on Time Scales in Banach Spaces

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper we address the question of solvability of dynamic equations on time scales in Banach spaces. In particular, our main theorem extends the result for classical differential equations in Banach spaces of Banaś and Goebel established in [5], to an arbitrary time scale.
Dušan Oberta
wiley   +1 more source

Example of a sequentially incomplete regular inductive limit of Banach spaces

International Journal of Mathematics and Mathematical Sciences, 1990
A sequentially incomplete regular inductive limit of a sequence of Banach spaces is constructed.
Jan Kucera, Kelly McKennon
doaj   +1 more source

On New Banach Sequence Spaces Involving Leonardo Numbers and the Associated Mapping Ideal

Journal of Function Spaces, 2022
In the present study, we have constructed new Banach sequence spaces ℓpL,c0L,cL, and ℓ∞L, where L=lv,k is a regular matrix defined by lv,k=lk/lv+2−v+2, 0≤k≤v,0, k>v, for all v,k=0,1,2,⋯, where l=lk is a sequence of Leonardo numbers.
Taja Yaying, Bipan Hazarika, O. M. Kalthum S. K. Mohamed, Awad A. Bakery   +3 more
doaj   +1 more source

A New Survey of Measures of Noncompactness and Their Applications

Axioms, 2022
We present a survey of the theory of measures of noncompactness and discuss some fixed point theorems of Darbo’s type. We apply the technique of measures of noncompactness to the characterization of classes of compact operators between certain sequence ...
Moosa Gabeleh, Eberhard Malkowsky, Mohammad Mursaleen, Vladimir Rakočević   +3 more
doaj   +1 more source

Upper and lower estimates in Banach sequence spaces [PDF]

, 1995
summary:Here we study the existence of lower and upper $\ell _p$-estimates of sequences in some Banach sequence spaces. We also compute the sharp $\ell _p$ estimates in their basis.
Gonzalo, Raquel, Raquel Gonzalo
core  

A ninny, an idiot and an economic theorist

Economica, EarlyView.
Abstract Anton Chekhov's story ‘The ninny’ meets the question: ‘What is the meaning of economic theory?’
Ariel Rubinstein
wiley   +1 more source