4 papers
Minimum attaining operators on reducing subspaces: Spectral structure and density
Puspendu Nag, Nag Puspendu, Golla Ramesh
In this article, we introduce and study the class of minimum attaining operators on a separable Hilbert space whose restrictions to every nonzero reducing su…
On the minimum modulus of dual truncated Toeplitz operators
Sudip Ranjan Bhuia, Ramesh Golla, Puspendu Nag
This article provides a systematic investigation of the minimum modulus of dual truncated Toeplitz operators (DTTOs) acting on the orthogonal complement of the model space $\…
Norm attaining dual truncated Toeplitz operators
Sudip Ranjan Bhuia, Puspendu Nag
In this paper, we investigate norm attainment for dual truncated Toeplitz operators $D_\vp$ acting on $\clk_u^\perp=uH^2\oplus H^2_{-}$, where is a nonconstant inner function a…
On Absolutely norm (minimum) attaining block operator matrix
Puspendu Nag, Ramesh Golla
In this article, we study absolutely norm attaining operators (-operators, in short), that is, operators that attain their norm on every non-zero closed subspace of a…