The paper proves a strictly stronger lower bound on the numerical radius of any nonzero Hilbert space operator, using the Crawford number of its square, and derives new bounds for operator matrices.
Title resolution pending
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
fields
math.FA 1years
2019 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Sharp inequalities for the numerical radius of Hilbert space operators and operator matrices
The paper proves a strictly stronger lower bound on the numerical radius of any nonzero Hilbert space operator, using the Crawford number of its square, and derives new bounds for operator matrices.