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  • ℓ₂-strictly singular operat...
    Huang, Jinghao; Pliev, Marat; Sukochev, Fedor

    Proceedings of the American Mathematical Society, 4/2022, Volume: 150, Issue: 4
    Journal Article

    We show that every ℓ 2 \ell _2 -strictly singular operator on the predual of any atomless hyperfinite finite von Neumann algebra M \mathcal {M} is Dunford–Pettis, which extends a Rosenthal’s theorem for the case of commutative algebra M = L ∞ ( 0 , 1 ) \mathcal {M}=L_\infty (0,1) . We also apply our result to the study of noncommutative symmetric spaces X = E ( M , τ ) X=E(\mathcal {M},\tau ) for which every ℓ 2 \ell _2 -strictly singular operator from L p ( 0 , 1 ) L_p(0,1) into X X is narrow.