Spectral Flows of Dilations of Fredholm Operators

Spectral Flows of Dilations of Fredholm Operators
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Fredholm 算子扩张的谱流

DOI:
10.4153/cmb-2014-055-3
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发表时间:
2014
期刊:
Canadian Mathematical Bulletin
影响因子:
--
通讯作者:
H. Schulz
H. Schulz
中科院分区:
--
文献类型:
--
作者:
Giuseppe De Nittis;H. Schulz

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给定一个本质酉收缩和一个任意酉伸缩,存在一个自然相关的谱流,它被证明等于算子的指数。这一结果是解释在一个相关的映射锥的K-理论。然后将其推广到奇对称Fredholm算子的Z2指标与Z2值谱流的连接.
Abstract Given an essentially unitary contraction and an arbitrary unitary dilation of it, there is a naturally associated spectral flow that is shown to be equal to the index of the operator. This result is interpreted in terms of the K-theory of an associated mapping cone. It is then extended to connect Z2 indices of odd symmetric Fredholm operators to a Z2-valued spectral flow.
DOI: 10.1007/s11040-012-9123-9
发表时间: 2013
期刊: Mathematical Physics, Analysis and Geometry
影响因子: --
作者:
J. C. Avila;H. Schulz-Baldes;C. Villegas-Blas
通讯作者: C. Villegas-Blas
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DOI: 10.1007/s00023-014-0394-5
发表时间: 2016
期刊: Annales Henri Poincaré
影响因子: --
作者:
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