Acta mathematica scientia,Series B ›› 1994, Vol. 14 ›› Issue (4): 475-478.
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Ding Guanggui, Huang Senzhong
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Abstract: Let (Ω, ∑,μ) be a measure space and (Xω)ω∈Ω a family of closed linear subspaces of some Banach space X. Let L1 (μ, (Xω)) be the linear subspace of the Bochner space L1 (μ,X) given by L1 (μ, (Xω)):={f ∈ L1 (μ,X):f(ω) ∈ Xω for all ω ∈ Ω}. Suppose that each Xω is of type p with constant 1 for some fixed p > 1. Two results are obtained:(1) If E ⊆ L1 (μ, (Xω)) is isomorphic to some L1 space with constant less than 21-1/p, then there is a projection from L1 (μ,X) onto E. (2) If E ⊆ L1 (μ, (Xω)) is a L1,λ space with λ small enough then E is complemented in L1 (μ, (Xω)). These results generalize early results of Dor[3], Alspach and Johnson[1].
Ding Guanggui, Huang Senzhong. A REMARK ON L1 SUBSPACES OF L1 (μ,X)[J].Acta mathematica scientia,Series B, 1994, 14(4): 475-478.
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