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zbMATH Open
Article . 1979
Data sources: zbMATH Open
Mathematics of Computation
Article . 1979 . Peer-reviewed
Data sources: Crossref
Mathematics of Computation
Article . 1979 . Peer-reviewed
Data sources: Crossref
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How to Make the Lanczos Algorithm Converge Slowly

How to make the Lanczos algorithm converge slowly
Authors: Scott, D. S.;

How to Make the Lanczos Algorithm Converge Slowly

Abstract

The Paige style Lanczos algorithm is an iterative method for finding a few eigenvalues of large sparse symmetric matrices. Some beautiful relationships among the elements of the eigenvectors of a symmetric tridiagonal matrix are used to derive a perverse starting vector which delays convergence as long as possible. Why such slow convergence is never seen in practice is also examined.

Related Organizations
Keywords

Numerical computation of eigenvalues and eigenvectors of matrices, Lanczos Process, Large Sparse Symmetric Matrix, Round-Off Error, Eigenvectors, Slow Convergence

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    17
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
17
Top 10%
Top 10%
Average
bronze