Abstract
A generalization of Mallat’s classic theory of multiresolution analysis (MRA) on local fields of positive characteristic was considered by Jiang et al. (J Math Anal Appl 294:523–532, 2004). In this paper, we present a notion of nonuniform MRA on local field \(K\) of positive characteristic. The associated subspace \(V_0\) of \(L^2(K)\) has an orthonormal basis, a collection of translates of the scaling function \(\varphi \) of the form \(\{ \varphi (x-\lambda ) \}_{ \lambda \in \Lambda }\) where \(\Lambda = \{ 0,r/N \}+ \mathcal{Z}, \,N \ge 1\) is an integer and \(r\) is an odd integer such that \(r\) and \(N\) are relatively prime and \(\mathcal{Z}=\{u(n): n\in \mathbb {N}_{0}\}\). We obtain the necessary and sufficient condition for the existence of associated wavelets and present an algorithm for the construction of nonuniform MRA on local fields starting from a low-pass filter \(m_{0}\) with appropriate conditions.
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The authors would like to thank the anonymous referee for his/her valuable comments and suggestions to improve the quality of the paper.
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Communicated by Daniel Aron Alpay.
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Shah, F.A., Abdullah Nonuniform Multiresolution Analysis on Local Fields of Positive Characteristic. Complex Anal. Oper. Theory 9, 1589–1608 (2015). https://doi.org/10.1007/s11785-014-0412-0
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DOI: https://doi.org/10.1007/s11785-014-0412-0