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On the Eigenvalues of a Norlund Infinite Matrix as an Operator on Some Sequence Spaces


Affiliations
1 Jomo Kenyatta University of Agriculture and Technology, Kenya
2 Department of Pure & Applied Mathematics, Jomo Kenyatta University of Agriculture and Technology, Kenya
3 Department of Mathematics and Actuarial Science, South Eastern Kenya University, Kenya
 

In various papers some authors have previously investigated [1], [2], [3], [4], [5] and determined the spectrum of weighted mean matrices considered as bounded operators on various sequence spaces. In this study, we determine eigen values of a Norlund matrix as a bounded operator over the sequence space . This will be achieved by applying Banach space theorems of functional analysis as well as summability methods of summability theory. We are also going to apply eigenvalue problem i.e. Ax= λ x. Where λ arenumbers (realorcomplex) and vector columns  ;suchthat . In which case it is shown that the set of Eigen values of 

 {λ∈C:|λ+1|<2}∪{1}


Keywords

Spectrum, Norlund Means, Sequence Spaces and Boundedness.
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  • On the Eigenvalues of a Norlund Infinite Matrix as an Operator on Some Sequence Spaces

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Authors

Ochieng Godrick Felix
Jomo Kenyatta University of Agriculture and Technology, Kenya
Jotham R. Akanga
Department of Pure & Applied Mathematics, Jomo Kenyatta University of Agriculture and Technology, Kenya
Augustus Wali Nzomo
Department of Mathematics and Actuarial Science, South Eastern Kenya University, Kenya

Abstract


In various papers some authors have previously investigated [1], [2], [3], [4], [5] and determined the spectrum of weighted mean matrices considered as bounded operators on various sequence spaces. In this study, we determine eigen values of a Norlund matrix as a bounded operator over the sequence space . This will be achieved by applying Banach space theorems of functional analysis as well as summability methods of summability theory. We are also going to apply eigenvalue problem i.e. Ax= λ x. Where λ arenumbers (realorcomplex) and vector columns  ;suchthat . In which case it is shown that the set of Eigen values of 

 {λ∈C:|λ+1|<2}∪{1}


Keywords


Spectrum, Norlund Means, Sequence Spaces and Boundedness.