Pointwise multipliers of Orlicz spaces
Pointwise multipliers of Orlicz spaces
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DOI:
10.1007/s00013-010-0160-y
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发表时间:
2010-07
影响因子:
0.6
通讯作者:
L. Maligranda;E. Nakai
中科院分区:
文献类型:
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作者:
L. Maligranda;E. Nakai
We show that the result on multipliers of Orlicz spaces holds in general. Namely, under the assumption that three Young functions Φ1, Φ2and Φ, generating corresponding Orlicz spaces, satisfy the estimatefor allu> 0, we prove that if the pointwise productxybelongs toLΦ(μ) for all, then. The result with some restrictions either on Young functions or on the measureμwas proved by Maligranda and Persson (Indag. Math.51(1989), 323–338). Our result holds for any collection of three Young functions satisfying the above estimate and for an arbitrary complete σ-finite measureμ.