Carleson measures, multipliers and integration operators for spaces of Dirichlet type
Carleson measures, multipliers and integration operators for spaces of Dirichlet type
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DOI:
10.1016/j.jfa.2006.04.025
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发表时间:
2006-12
影响因子:
1.7
通讯作者:
D. Girela;J. A. Peláez
中科院分区:
文献类型:
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作者:
D. Girela;J. A. Peláez
For 0<p<∞ and α>−1, we let Dαpdenote the space of those functions f which are analytic in the unit disc D={z∈C:|z|<1} and satisfy [Formula: see text] . In this paper we characterize the positive Borel measures μ in D such that Dαp⊂Lq(dμ), 0<p<q<∞. We also characterize the pointwise multipliers from Dαpto Dβq(0<p<q<∞) if p−2<α<p. In particular, we prove that if (2+α)p−(β+2)q>0 the only pointwise multiplier from Dαpto Dβq(0<p<q<∞) is the trivial one. This is not longer true for (2+α)p−(β+2)q⩽0 and we give a number of explicit examples of functions which are multipliers from Dαpto Dβqfor this range of values.