scientific article; zbMATH DE number 4000129

zbMath0617.15008MaRDI QIDQ4726397

Shyamal Das Peddada

Publication date: 1986

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

orthogonal projection operatorcharacterizations of a quadratic subspacequadratic subspace of a Hilbert space

Mathematics Subject Classification ID

Norms of matrices, numerical range, applications of functional analysis to matrix theory (15A60) Hermitian, skew-Hermitian, and related matrices (15B57) Algebraic systems of matrices (15A30) Inner product spaces and their generalizations, Hilbert spaces (46C99)

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