Abstract
If X and Y are FK spaces, then every infinite matrix A ∈ (X, Y) defines a bounded linear operator LA ∈ B(X, Y) where LA(x) = Ax for each x ∈ X. But the converse is not always true. Indeed, if L is a general bounded linear operator from X to Y, that is, L ∈ B(X, Y), we are interested in the representation of such an operator using some infinite matrices. In this paper we establish the representations of the general bounded linear operators from the space bv into the spaces ℓ∞, c and c0. We also prove some estimates for their Hausdorff measures of noncompactness. In this way we show the difference between general bounded linear operators between some sequence spaces and the matrix operators associated with matrix transformations.
References
[1] Djolović I.—Malkowsky, E.: A note on compact operators on matrix domains, J. Math. Anal. Appl. 340 (2008), 291–303.10.1016/j.jmaa.2007.08.021Search in Google Scholar
[2] Maddox, I. J.: Elements of Functional Analysis, Cambridge University Press, Cambridge, 1970.Search in Google Scholar
[3] Malkowsky, E.—Djolović I.—Petković K.: Two Methods for the characterization of compact operators between BK spaces, Banach J. Math. Anal. 9 (2015), 1–13.10.15352/bjma/09-3-1Search in Google Scholar
[4] Malkowsky, E.—Rakočević, V.: An introduction into the theory of sequence spaces and measures of noncompactness. In: Zbornik radova 9(17), Matematički institut SANU, Belgrade, 2000, pp. 143–234.Search in Google Scholar
[5] Malkowsky, E.—Rakočević, V.: On matrix domains of triangles, Appl. Math. Comput. 189 (2007), 1146–1163.10.1016/j.amc.2006.12.024Search in Google Scholar
[6] Malkowsky, E.—Rakočević, V.—ŽIvković-Zlatanović, S.: Matrix transformations between the sequence space bvp and certain BK spaces, Bull. Cl. Sci. Math. Nat. Sci. Math. 123 (2002), 33–46.10.2298/BMAT0227033MSearch in Google Scholar
[7] Rakočević, V.: Funkcionalna Analiza, Naučna knjiga, Beograd, 1994.Search in Google Scholar
[8] Rakočević, V.: Measures of noncompactness and some applications, FILOMAT 12 (1998), 87–120.Search in Google Scholar
[9] Sargent, W. L. C.: On compact matrix transformations between sectionally bounded BK-spaces, J. London Math. Soc. 41 (1966), 79–87.10.1112/jlms/s1-41.1.79Search in Google Scholar
[10] Stieglitz, M.—Tietz, H.: Matrixtransformationen von Folgenräumen eine Ergebnisübersicht, Math. Z. 154 (1977), 1–16.10.1007/BF01215107Search in Google Scholar
[11] Wilansky, A.: Summability Through Functional Analysis. North-Holland Mathematics Studies 85, Amsterdam, 1984.Search in Google Scholar
© 2018 Mathematical Institute Slovak Academy of Sciences
Articles in the same Issue
- On the family of functions with closure of graphs in the Mendez ideals
- The predicate completion of a partial information system
- On lattices of z-ideals of function rings
- Compactifications of partial frames via strongly regular ideals
- Lifting components in clean abelian ℓ-groups
- Invariance of nonatomic measures on effect algebras
- On the alexander dual of path ideals of cycle posets
- Generalized multiplicative derivations in 3-prime near rings
- Cleft extensions for quasi-entwining structures
- Groups with positive rank gradient and their actions
- Certain results on q-starlike and q-convex error functions
- Faber polynomial coefficient estimates for subclass of bi-univalent functions defined by quasi-subordinate
- Positive periodic solutions for singular high-order neutral functional differential equations
- A special class of functional equations
- Matrix mappings and general bounded linear operators on the space bv
- Skew-symmetric operators and reflexivity
- Derivatives of Hadamard type in vector optimization
- Cardinal functions of the hyperspace of convergent sequences
- Suzuki-type of common fixed point theorems in fuzzy metric spaces
- Second hankel determinat for certain analytic functions satisfying subordinate condition
Articles in the same Issue
- On the family of functions with closure of graphs in the Mendez ideals
- The predicate completion of a partial information system
- On lattices of z-ideals of function rings
- Compactifications of partial frames via strongly regular ideals
- Lifting components in clean abelian ℓ-groups
- Invariance of nonatomic measures on effect algebras
- On the alexander dual of path ideals of cycle posets
- Generalized multiplicative derivations in 3-prime near rings
- Cleft extensions for quasi-entwining structures
- Groups with positive rank gradient and their actions
- Certain results on q-starlike and q-convex error functions
- Faber polynomial coefficient estimates for subclass of bi-univalent functions defined by quasi-subordinate
- Positive periodic solutions for singular high-order neutral functional differential equations
- A special class of functional equations
- Matrix mappings and general bounded linear operators on the space bv
- Skew-symmetric operators and reflexivity
- Derivatives of Hadamard type in vector optimization
- Cardinal functions of the hyperspace of convergent sequences
- Suzuki-type of common fixed point theorems in fuzzy metric spaces
- Second hankel determinat for certain analytic functions satisfying subordinate condition