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math.FA2019★ 26 cited
On inequalities for A-numerical radius of operators
Pintu Bhunia, Kallol Paul, Raj Kumar Nayak
Let be a positive operator on a complex Hilbert space We present inequalities concerning upper and lower bounds for -numerical radius of operators, which impr…
math.FA2019
Sharp inequalities for the numerical radius of Hilbert space operators and operator matrices
Pintu Bhunia, Kallol Paul, Raj kumar Nayak
We present new upper and lower bounds for the numerical radius of a bounded linear operator defined on a complex Hilbert space, which improve on the existing bounds. Among many oth…