## Explicit Bernstein type inequalities for wavelet coefficients in $L_p(R^n)$

28 Aug 2017  ·  Spektor Susanna, Zhuang Xiaosheng ·

In this paper, we investigate the wavelet coefficients for function spaces $\mathcal{A}_k^p=\{f: \|(i \omega)^k\hat{f}(\omega)\|_p\leq 1\}, k\in N, p\in(1,\infty)$ using an important quantity $C_{k,p}(\psi)$. In particular, Bernstein type inequalities associated with wavelets are established... We obtained a sharp inequality of Bernstein type for splines, which induces a lower bound for the quantity $C_{k,p}(\psi)$ with $\psi$ being the semiorthogonal spline wavelets. We also study the asymptotic behavior of wavelet coefficients for both the family of Daubechies orthonormal wavelets and the family of semiorthogonal spline wavelets. Comparison of these two families is done by using the quantity $C_{k,p}(\psi)$. read more

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Functional Analysis