Results 11 to 20 of about 46,518 (304)

On regular operators on Banach Lattices [PDF]

open access: yesActa et Commentationes: Ştiinţe Exacte şi ale Naturii, 2023
Let E and F be Banach lattices and X and Y be Banach spaces. A linear operator T:E->F is called regular if it is the difference of two positive operators. We show that F has a b-property if and only if Lr(E,F) has b-property.
Omer Gok
doaj   +4 more sources

Transcendental operators acting on slice regular functions [PDF]

open access: yesConcrete Operators, 2022
The aim of this paper is to carry out an analysis of five trascendental operators acting on the space of slice regular functions, namely *-exponential, *-sine and *-cosine and their hyperbolic analogues. The first three of them were introduced by Colombo,
de Fabritiis Chiara
doaj   +2 more sources

Trace Operators on Regular Trees [PDF]

open access: yesAnalysis and Geometry in Metric Spaces, 2020
We consider different notions of boundary traces for functions in Sobolev spaces defined on regular trees and show that the almost everywhere existence of these traces is independent of the chosen definition of a trace.
Koskela Pekka   +2 more
doaj   +3 more sources

On the Quotients of Regular Operators [PDF]

open access: yesUniversal Journal of Mathematics and Applications, 2019
We give some results about quotients of regular operators on Banach lattices by the linear span of the positive M-weakly and positive L-weakly compact operators.
Erdal Bayram   +1 more
doaj   +2 more sources

Interpolated scales of approximation spaces for regular elliptic operators on compact manifolds [PDF]

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2014
We define the interpolated scales of approximation spaces, generated by regular elliptic operators on compact manifolds. The appropriate Bernstein-Jackson inequalities and application to spectral approximations of regular elliptic operators are ...
M.I. Dmytryshyn
doaj   +2 more sources

The Order Continuity of the Regular Norm on Regular Operator Spaces [PDF]

open access: yesAbstract and Applied Analysis, 2013
We present here some sufficient conditions for the regular norm on to be order continuous, and for () to be a KB-space. In particular we deduce a characterization of the order continuity of the regular norm using L- and M-weak compactness of regular ...
Zi Li Chen, Ying Feng, Jin Xi Chen
doaj   +4 more sources

Fredholm property of regular hypoelliptic operators on the scales of multianisotropic spaces [PDF]

open access: yesITM Web of Conferences, 2022
This paper studies the Fredholm properties for a class of regular hypoelliptic operators. We establish necessary and sufficient conditions for a priori estimates for differential operators acting in multianisotropic Sobolev spaces in Rn.
Tumanyan Ani
doaj   +1 more source

Power-regular Bishop operators and spectral decompositions [PDF]

open access: yes, 2021
It is proved that a wide class of Bishop-type operators $T_{\phi,\tau}$ are power-regular operators in $L^p(\Omega, \mu)$, $1 \leq p < \infty$, computing the exact value of the local spectral radius at any function $u \in L^p(\Omega, \mu)$.
Gallardo Gutiérrez, Eva Antonia   +1 more
core   +1 more source

Regular and completely regular differential operators [PDF]

open access: yesMathematical Notes, 2007
We define the concept of completely regular ordinary differential operators and give various criteria for operators to belong to this class. We give also criteria for Birkhof regularity of ordinary differential operators in terms of the growth of the Green function and basis property.
Shiryaev, E. A., Shkalikov, A. A.
openaire   +2 more sources

Some Results on Non-Archimedean Operators Theory [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2023
In this paper, we define the notions of semi-regular operator, analytical core, surjectivity modulus and the injectivity modulus of bounded linear operators on non-Archimedean Banach spaces over $\mathbb{K}.$ We give a necessary and sufficient condition ...
Jawad Ettayb
doaj   +1 more source

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