Partially isometric approximation of positive operators
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Publication:909962
zbMath0695.47018MaRDI QIDQ909962
Publication date: 1989
Published in: Illinois Journal of Mathematics (Search for Journal in Brave)
Linear operators belonging to operator ideals (nuclear, (p)-summing, in the Schatten-von Neumann classes, etc.) (47B10) Approximation by operators (in particular, by integral operators) (41A35)
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Some norm inequalities concerning generalized inverses. II ⋮ Self-commutator approximants ⋮ Approximation by partial isometries and symmetric approximation of finite frames ⋮ Some norm inequalities concerning generalized inverses ⋮ Global symmetric approximation of frames ⋮ Some approximants in operator algebras ⋮ Commutator Approximants ⋮ Approximation of matrices and a family of Gander methods for polar decomposition ⋮ On a conjecture by Mbekhta about best approximation by polar factors
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