Abstract
K.-H. Grochenig and A. Haas asked whether for every expanding integer matrix A ∈ Mn(ℤ) there is a Haar type orthonormal wavelet basis having dilation factor A and translation lattice ℤn. They proved that this is the case when the dimension n = 1. This article shows that this is also the case when the dimension n = 2.
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Lagarias, J., Wang, Y. Haar Type Orthonormal Wavelet Bases in R2. J Fourier Anal Appl 2, 1–14 (1995). https://doi.org/10.1007/s00041-001-4019-2
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DOI: https://doi.org/10.1007/s00041-001-4019-2