Numerical radius inequalities of operator matrices with applications

被引：15

作者：

Bhunia, Pintu ^{[1
]}

Bag, Santanu ^{[2
]}

Paul, Kallol ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Math, Kolkata 700032, India

[2] Vivekananda Coll Women, Dept Math, Kolkata, India

来源：

LINEAR & MULTILINEAR ALGEBRA | 2021年 / 69卷 / 09期

关键词：

Numerical radius; operator matrix; zeros of polynomial; LOWER BOUNDS; ZEROS;

D O I：

10.1080/03081087.2019.1634673

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We present upper and lower bounds for the numerical radius of operator matrices which improve on the existing bounds for the same. As an application of the results obtained we give a better estimation for the zeros of a polynomial.

引用

页码：1635 / 1644

页数：10

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