Generalizes the right-hand derivative and subdifferential of the B(H) norm to B(H,K), provides a best-approximation characterization for operator tuples, and defines epsilon-Birkhoff orthogonality via subdifferentials.
Zi˛ etak,From the strict Chebyshev approximant of a vector to the strict spectral approximant of a matrix, Warsaw : Banach Center Publ., 112 Polish Acad
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
fields
math.FA 1years
2025 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
Subdifferential of the $\mathcal{B(H,K)}$ norm, and approximate orthogonality
Generalizes the right-hand derivative and subdifferential of the B(H) norm to B(H,K), provides a best-approximation characterization for operator tuples, and defines epsilon-Birkhoff orthogonality via subdifferentials.