Upper Bounds for the Numerical Radius of Off-Diagonal 2 × 2 Operator Matrices

We establish multiple novel upper estimates for the numerical radius associated with off-diagonal operator matrices defined on a complex Hilbert space <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="fraktur">H</mi></semantics></math></inl...

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Principais autores:	Najla Altwaijry, Silvestru Sever Dragomir
格式:	Artigo
語言:	Inglês
出版:	MDPI AG 2025-10-01
叢編:	Mathematics
主題:	numerical radius off-diagonal operator matrix bounded linear operators Hilbert spaces real and imaginary parts of operators adjoint operators
在線閱讀:	https://www.mdpi.com/2227-7390/13/21/3459
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