Bounds for zeros of a polynomial using numerical radius of Hilbert space operators
نویسندگان
چکیده
We obtain bounds for the numerical radius of $$2 \times 2$$ operator matrices which improve on existing bounds. also show that inequalities obtained here generalize ones. As an application results here, we estimate zeros a monic polynomial and illustrate with examples are better than
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ژورنال
عنوان ژورنال: Annals of Functional Analysis
سال: 2021
ISSN: ['2639-7390', '2008-8752']
DOI: https://doi.org/10.1007/s43034-020-00107-4