Let α and β be bounded measurable functions on the unit circle T, and let L 2 (W ) be a weighted L 2 space on T. The singular inte-where P is an analytic projection and Q = I − P is a co-analytic projection. In the previous paper, the essential norm of S α,β are calculated in the case when W is a constant function. In this paper, the essential norm of S α,β are estimated in the case when W is an A2-weight.
Mathematics Subject Classification (2000). Primary 45E10; Secondary 47B35.
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