Fredholmness and Weylness of block operator matrices
Fuente:
arXiv
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| Formato: | Preprint |
| Publicado: |
2021
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| _version_ | 1866909753048825856 |
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| author | Sarajlija, Nikola |
| author_facet | Sarajlija, Nikola |
| contents | This paper has aim to characterize Fredholmness and Weylness of upper triangular operator matrices having arbitrary dimension n. We present various characterization results in the setting of infinite dimensional Hilbert spaces, thus extending some known results from Cao X. et al. (2006, 2005) and Zhang et al. (2012) to the case of arbitrary dimension n. We pose our results without using separability assumption, thus improving perturbation results from Wu X. et al. (2020). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2108_12425 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Fredholmness and Weylness of block operator matrices Sarajlija, Nikola Functional Analysis 47A08, 47A53, 47A55, 47A05, 47A10 This paper has aim to characterize Fredholmness and Weylness of upper triangular operator matrices having arbitrary dimension n. We present various characterization results in the setting of infinite dimensional Hilbert spaces, thus extending some known results from Cao X. et al. (2006, 2005) and Zhang et al. (2012) to the case of arbitrary dimension n. We pose our results without using separability assumption, thus improving perturbation results from Wu X. et al. (2020). |
| title | Fredholmness and Weylness of block operator matrices |
| topic | Functional Analysis 47A08, 47A53, 47A55, 47A05, 47A10 |
| url | https://arxiv.org/abs/2108.12425 |