Abstract
In this paper we shall characterize Sobolev spaces of an arbitrary order of smoothness using nonstationary tight wavelet frames for L 2(ℝ). In particular, we show that a Sobolev space of an arbitrary fixed order of smoothness can be characterized in terms of the weighted ℓ2-norm of the analysis wavelet coefficient sequences using a fixed compactly supported nonstationary tight wavelet frame in L 2(ℝ) derived from masks of pseudosplines in [15]. This implies that any compactly supported nonstationary tight wavelet frame of L 2(ℝ) in [15] can be properly normalized into a pair of dual frames in the corresponding pair of dual Sobolev spaces of an arbitrary fixed order of smoothness.
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Research supported in part by NSERC Canada under Grant RGP 228051.
Research supported in part by Grant R-146-000-060-112 at the National University of Singapore.
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Han, B., Shen, Z. Characterization of Sobolev spaces of arbitrary smoothness using nonstationary tight wavelet frames. Isr. J. Math. 172, 371–398 (2009). https://doi.org/10.1007/s11856-009-0079-9
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DOI: https://doi.org/10.1007/s11856-009-0079-9