Schur multiplier operator and matrix inequalities
In this note we obtain a reverse version of the Haagerup Theorem. In particular, if $ A \in \mathbb{M}_{n}$ has a $ 2\times2- $ principal submatrix as $ \left[ \begin{array}{cc}1& \alpha \\\beta & 1\\\end{array}\right]$ with $ \beta \neq \bar{\alpha}, $ then $ \Vert S_{A} \Vert > 1$ where...
| Published in: | Journal of Mahani Mathematical Research |
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| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
Shahid Bahonar University of Kerman
2023-11-01
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| Subjects: | |
| Online Access: | https://jmmrc.uk.ac.ir/article_3899_add8768074d97494f366c93a386f7f8b.pdf |