Results 11 to 20 of about 40 (40)

Cohyponormal operators with the single valued extension property

International Journal of Mathematics and Mathematical Sciences, Volume 9, Issue 4, Page 659-663, 1986., 1986
It is proved that in order to find a nontrivial hyperinvariant subspace for a cohyponormal operator it suffices to make the further assumption that the operator have the single‐valued extension property.
Ridgley Lange, Shengwang Wang
wiley   +1 more source

Spectral Properties of Nonhomogenous Differential Equations with Spectral Parameter in the Boundary Condition

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2014
In this paper, using the boundary properties of the analytic functions we investigate the structure of the discrete spectrum of the boundary value problem (0.1)iy1'+q1(x)y2−λy1=ϕ1(x)  −iy2'+q2(x)y1−λy2=ϕ2(x),x∈R+$$\matrix{\hfill {iy_1^\prime + q_1 \left ...
Karaman Özkan
doaj   +1 more source

The Kluvanek‐Kantorovitz characterization of scalar operators in locally convex spaces

International Journal of Mathematics and Mathematical Sciences, Volume 5, Issue 2, Page 345-349, 1982., 1982
This paper is devoted to a proof of the characterization without duality theory, using strong integrals, while eliminating any assumptions of barrelledness or equicontinuity.
William V. Smith
wiley   +1 more source

PC-Asymptotically almost automorphic mild solutions for impulsive integro-differential equations with nonlocal conditions [PDF]

In this article, we study the existence of PC-asymptotically almost automorphic mild solutions of integro-differential equations with nonlocal conditions via resolvent operators in Banach space. Further, we give sufficient conditions for the solutions to
BENCHOHRA, Mouffak, BENSALEM, Abdelhamid, LITIMEIN, Sara, IKHLEF, Nadia, SALIM, Abdelkrim   +4 more
core   +2 more sources

© Hindawi Publishing Corp. ON THE CARLEMAN CLASSES OF VECTORS OF A SCALAR TYPE SPECTRAL OPERATOR [PDF]

, 2003
The Carleman classes of a scalar type spectral operator in a reflexive Banach space are characterized in terms of the operator’s resolution of the identity. A theorem of the Paley-Wiener type is considered as an application.
L. Gorbachuk, Drs Miroslav, Marat V. Markin, Valentina I. Gorbachuk, To My Teachers   +4 more
core  

New forms of bilateral inequalities for K-g-frames

Demonstratio Mathematica
In this work, several bilateral inequalities for KK-gg-frames in subspaces are established, drawing support from two kinds of operators induced, respectively, by the KK-gg-frame itself and the KK-dual pair, which, compared with previous ones concerning ...
Xiang Zhong-Qi
doaj   +1 more source

Well-Bounded Operators on Non-Reflexive Banach Spaces II [PDF]

, 2004
In this paper we examine the relationship between the various subclasses of well-bounded operators. Although some of these subclasses have been shown to coincide on certain families of Banach spaces, we show here that apart from these previously ...
Cheng, Qingping, Doust, Ian
core  

Existence and attractivity results on semi-infinite intervals for integrodifferential equations with non-instantaneous impulsions in Banach spaces

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
In this article, we study the existence of mild solutions of a non-instantaneous integrodi erential equations on unbounded domain via resolvent operators in Banach space. For our proofs, we employ the semigroups theory and Schauder’s fixed point theorem.
Bensalem Abdelhamid, Salim Abdelkrim, Benchohra Mouffak, Karapinar Erdal   +3 more
doaj   +1 more source

The modified split generalized equilibrium problem for quasi-nonexpansive mappings and applications. [PDF]

J Inequal Appl, 2018
Cheawchan K, Kangtunyakarn A.
europepmc   +1 more source

Isomorphic Schauder decompositions in certain Banach spaces

Open Mathematics, 2014
Marchenko Vitalii
doaj   +1 more source