On Compact Operators Whose Norms Are Eigenvalues and Completeness

Abstract/Overview

Let X be a Banach space and T: X→Y be a linear operator, then Tis compact if it maps bounded sequences in X to sequences in Y with convergent subsequences, that is, if xn ∈ X is a bounded sequence, then T xn ∈ Y has a convergent subsequence say, T xnk in Y. The eigenvalue of an operator T, is a scalar λ if there is a nontrivial solution x such that T x=λ x. Such an x is called an eigenvector corresponding to the eigenvalue λ. A vector space is complete if every Cauchy sequence in V converges in V. It is known that every finite dimensional nor medspace is complete and that a Hilbert space is a normed space that is complete with respect to the norm induced by the inner product. In this paper we have established the conditions for completeness of a compact operator T whose norm is an eigenvalue.

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APA

N., O (2024). On Compact Operators Whose Norms Are Eigenvalues and Completeness. Afribary. Retrieved from https://track.afribary.com/works/on-compact-operators-whose-norms-are-eigenvalues-and-completeness

MLA 8th

N., Owino "On Compact Operators Whose Norms Are Eigenvalues and Completeness" Afribary. Afribary, 04 Jun. 2024, https://track.afribary.com/works/on-compact-operators-whose-norms-are-eigenvalues-and-completeness. Accessed 27 Nov. 2024.

MLA7

N., Owino . "On Compact Operators Whose Norms Are Eigenvalues and Completeness". Afribary, Afribary, 04 Jun. 2024. Web. 27 Nov. 2024. < https://track.afribary.com/works/on-compact-operators-whose-norms-are-eigenvalues-and-completeness >.

Chicago

N., Owino . "On Compact Operators Whose Norms Are Eigenvalues and Completeness" Afribary (2024). Accessed November 27, 2024. https://track.afribary.com/works/on-compact-operators-whose-norms-are-eigenvalues-and-completeness