Abstract
The wavelet group and wavelet representation associated with shifts coming from a two dimensional crystal symmetry group \(\Gamma \) and dilations by powers of 3, are defined and studied. The main result is an explicit decomposition of this \(3\Gamma \)-wavelet representation into irreducible representations of the wavelet group. Because we prove that the \(3\Gamma \)-wavelet representation is multiplicity free, this direct integral decomposition is essentially unique.
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The third author was supported by an individual grant from the Simons Foundation (# 316981). We thank the anonymous referees for helpful suggestions and remarks.
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Communicated by Hartmut Führ.
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Baggett, L.W., Merrill, K.D., Packer, J.A. et al. Decomposing the Wavelet Representation for Shifts by Wallpaper Groups. J Fourier Anal Appl 27, 16 (2021). https://doi.org/10.1007/s00041-021-09818-1
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DOI: https://doi.org/10.1007/s00041-021-09818-1