A new method of connecting two wavelet sets with a continuous path of wavelet sets is given. The method is based on a pure set theoretic fact known as the Schroder-Cantor-Bernstein theorem and on a characterization of wavelet sets in terms of one-to-one measurable bijections of [0,1) satisfying some extra conditions.
W. C. Lang determined wavelets on Cantor dyadic group by using Multiresolution analysis method. In this paper we have given characterization of wavelet sets on Cantor dyadic group providing another method for the construction of wavelets. All the wavelets originating from wavelet sets are not necessarily associated with a multiresolution analysis. Relation between multiresolution analysis and, wavelets determined from wavelet sets is established along with relevant examples.
For Vilenkin group only the existence of multiwavelets associated with multiresolution analysis (MRA) is known. In this paper, we have shown that by using wavelet sets we can also construct single wavelet in case of Vilenkin group which are not associated with MRA.We have given characterization of single and multi-wavelet sets on Vilenkin group. Further, we have studied generalized scaling sets, some of their properties and relation between wavelet sets and generalized scaling sets.
Single wavelet sets, and thus single wavelets, are shown to exist for the actions of all crystallographic groups on $\mathbb R^2$ under all integer dilations. Examples of such sets satisfying the additional requirement that they are finite unions of convex sets are presented for each of the groups under dilation by two.
本文证明了在有限测度平面上存在可测集W,在扩张矩阵A,仿射外尔群W和满秩格G的作用下,W以可测方式平铺平面.本文是对第一作者和第二作者的早期文章“Coxeter groups and wavelet sets”的后续研究,也与M. Dobrescu和第三作者。在完成这两篇文章后,三位作者参加了2006年12月2日至7日在班夫中心举办的“分形分析、小波和动力系统中的算子方法”研讨会。Bratteli,P. Jorgensen,D. Krribs,G. Olafsson和S. Silvestrov,并讨论了文章之间的相互关系和差异,并在Larson-Massopust文章中提出的两个开放问题上进行了工作。我们解决了问题2的一部分,包括一个令人惊讶的正解,提出了一个猜想,我们在这篇文章中提出我们的结果。