The reduced minimum modulus and the spectrum

DOI10.1007/BF01235744zbMath0674.47002MaRDI QIDQ1121502

Jaroslav Zemánek

Publication date: 1989

Published in: Integral Equations and Operator Theory (Search for Journal in Brave)

zbMATH Keywords

reduced minimum modulusessential spectral radiusasymptotic formulae for the jumps of the minimum index of a semi-Fredholm operator on a Banach spaceRiesz eigenvalues

Mathematics Subject Classification ID

(Semi-) Fredholm operators; index theories (47A53)

Related Items (2)

Generalized spectrum and commuting compact perturbations ⋮ Maps preserving the local reduced minimum modulus

Cites Work

• Perturbation theory for nullity, deficiency and other quantities of linear operators
• The surjectivity radius, packing numbers and boundedness below of linear operators
• The stability radius of a semi-Fredholm operator
• Geometric characteristic of semi-Fredholm operators and their asymptotic behaviour
• Lower s-numbers and their asymptotic behaviour
• The Asymptotic Behavior of the Reduced Minimum Modulus of a Fredholm Operator

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