
Fix a spherically symmetric wavelet \(\psi\) satisfying an admissibility condition and, as usual, for any \(b\in\mathbb R^n\) and \(a>0\), denote \(\psi^{a,b}(x) = a^{-n/2}\psi(\frac{x-b}{a})\). The continuous wavelet transform of a compactly supported distribution \(f\) associated to \(\psi\) is given by \((Tf)(a,b)= \langle f,\overline{\psi^{a,b}}\rangle\). Assume that \(f\in {\mathcal E}'(\mathbb R^n)\) also belongs to the Sobolev space \(H^{-l}(\mathbb R^n)\), \(l>0\). The main theorem of the present paper states that, if \(s\geq(n-1)/2+l\), then \[ \lim_{\lambda\to 0+}W^s_{\lambda}f(x) = 0 \] uniformly with respect to \(x\in K\) for any compact subset \(K\subset\mathbb R^n\setminus \operatorname{supp}f\). Here, \[ W^s_\lambda f(x)= C_\psi^{-1} \int_{a>\lambda} \bigg(1-\frac{\lambda^2}{a^2}\bigg)^s \frac{da}{a^{n+1}} \int_{\mathbb R^n}(Tf)(a,b) \psi^{a,b}(x)\,db \] is the Riesz means of order \(s\) of the partial wavelet transforms and \(C_\psi\) is a constant related to the admissibility condition.
Continuous wavelet transforms, Applied Mathematics, distributions, Integral transforms in distribution spaces, Distributions, Nontrigonometric harmonic analysis involving wavelets and other special systems, Riesz means, Pointwise convergence, continuous wavelet transform
Continuous wavelet transforms, Applied Mathematics, distributions, Integral transforms in distribution spaces, Distributions, Nontrigonometric harmonic analysis involving wavelets and other special systems, Riesz means, Pointwise convergence, continuous wavelet transform
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