Orthonormal dilations of Parseval wavelets
Orthonormal dilations of Parseval wavelets
复制标题
Parseval 小波的正交扩张
DOI:
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发表时间:
2007
期刊:
影响因子:
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通讯作者:
Qiyu Sun
中科院分区:
文献类型:
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作者:
D. Dutkay;D. Han;Gabriel Picioroaga;Qiyu Sun
AbstractWe prove that any Parseval wavelet frame is the projection of an orthonormal wavelet basis for a representation of the Baumslag–Solitar group
$$BS(1, 2) = langle{u, t,|, utu^{-1} = t^2}
angle.$$We give a precise description of this representation in some special cases, and show that for wavelet sets, it is related to symbolic dynamics (Theorem 3.14). We prove that the structure of the representation depends on the analysis of certain finite orbits for the associated symbolic dynamics (Theorem 3.24). We give concrete examples of Parseval wavelets for which we compute the orthonormal dilations in detail; we construct Parseval wavelet sets which have infinitely many non-isomorphic orthonormal dilations.