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＜E-Book＞
Banach Space Complexes / by C.-G. Ambrozie, Florian-Horia Vasilescu
(Mathematics and Its Applications ; 334)

Edition	1st ed. 1995.
Publisher	(Dordrecht : Springer Netherlands : Imprint: Springer)
Year	1995
Language	English
Size	V, 213 p : online resource
Authors	*Ambrozie, C.-G author Vasilescu, Florian-Horia author SpringerLink (Online service)
Subjects	LCSH:Operator theory LCSH:Functional analysis LCSH:Mathematical analysis LCSH:Differential equations LCSH:Functions of complex variables FREE:Operator Theory FREE:Functional Analysis FREE:Integral Transforms and Operational Calculus FREE:Differential Equations FREE:Several Complex Variables and Analytic Spaces
Notes	I Preliminaries -- II Semi-Fredholm complexes -- III Related topics -- Notations The aim of this work is to initiate a systematic study of those properties of Banach space complexes that are stable under certain perturbations. A Banach space complex is essentially an object of the form 1 op-l oP +1 ... --+ XP- --+ XP --+ XP --+ ... , where p runs a finite or infiniteinterval ofintegers, XP are Banach spaces, and oP : Xp ..... Xp+1 are continuous linear operators such that OPOp-1 = 0 for all indices p. In particular, every continuous linear operator S : X ..... Y, where X, Yare Banach spaces, may be regarded as a complex: O ..... X ~ Y ..... O. The already existing Fredholm theory for linear operators suggested the possibility to extend its concepts and methods to the study of Banach space complexes. The basic stability properties valid for (semi-) Fredholm operators have their counterparts in the more general context of Banach space complexes. We have in mind especially the stability of the index (i.e., the extended Euler characteristic) under small or compact perturbations, but other related stability results can also be successfully extended. Banach (or Hilbert) space complexes have penetrated the functional analysis from at least two apparently disjoint directions. A first direction is related to the multivariable spectral theory in the sense of J. L HTTP:URL=https://doi.org/10.1007/978-94-011-0375-6

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