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JOCIC, Danko R
Linear algebra and its applications, 11/2009, Letnik: 431, Številka: 11Journal Article
Sharp upper estimates for the norm of the weighted elementary operator of the form ∑ n = 1 ∞ C n Z n A n ⊗ B n W n D n , acting from one symmetrically normed ideal of compact Hilbert space operators to another, are given. Particularly, we relate the norm of ∑ n = 1 ∞ C n Z n A n ⊗ A n ∗ W n C n ∗ with norms of ∑ n = 1 ∞ A n ⊗ A n ∗ and ∑ n = 1 ∞ C n ⊗ C n ∗ on the appropriate domains and co-domains.
