2000
DOI: 10.1016/s0378-4754(00)00178-6
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About Hölder condition numbers and the stratification diagram for defective eigenvalues

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Cited by 11 publications
(11 citation statements)
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“…Furthermore, we show that for a nondegoratory eigenvalue of algebraic multiplicity m ≥ 2, 2) where N is the nilpotent operator associated with λ in the Jordan decomposition of A. The formulas (1.1) and (1.2) are the main results of this note.…”
mentioning
confidence: 85%
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“…Furthermore, we show that for a nondegoratory eigenvalue of algebraic multiplicity m ≥ 2, 2) where N is the nilpotent operator associated with λ in the Jordan decomposition of A. The formulas (1.1) and (1.2) are the main results of this note.…”
mentioning
confidence: 85%
“…Now, we give the definition for the Hölder condition number of an eigenvalue of arbitrary multiplicity (see [2]). For λ ∈ C, m ∈ N and A ∈ C n×n we set If λ is an eigenvalue of A ∈ C n×n of algebraic multiplicity m then the Hölder condition number of λ to the order α > 0 is defined by…”
Section: Condition Numbersmentioning
confidence: 99%
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“…In this case however, we can still quantify conditioning by switching to a logarithmic scale [5,11,13]. Let us define the condition exponent of z by…”
Section: Lidskii's Perturbation Theorymentioning
confidence: 99%
“…It measures the sensitivity of the eigenvalue λ if the matrix A is subjected to perturbations from the class Δ. In recent years some work has been done in order to obtain estimates or computable formulae for κ Δ (A, λ) [3,4,5,7,13,15,16,18,17,20,21,23]. However, the condition number cannot reveal how the eigenvalue moves in a specific direction under structured perturbations.…”
mentioning
confidence: 99%