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Author:

Zhang, Y. (Zhang, Y..) (Scholars:张勇) | Li, Y.Z. (Li, Y.Z..) (Scholars:李云章)

Indexed by:

Scopus PKU CSCD

Abstract:

p-adic MRA and GMRA are important tools for constructing wavelet frames in L 2 (R + ). That a nested subspace sequence in L 2 (R + ) has trivial intersection and L 2 (R + ) union is a fundamental requirement for it to form a p-adic MRA and GMRA. This paper addresses the intersection and union of p-adic dilates of a singly generated p-adic shift-invariant subspace. We prove that, for a singly generated p-adic shift-invariant subspace, the intersection of its p-adic dilates is 0, and the union of its p-adic dilates is a Walsh p-adic reducing subspace of L 2 (R + ) if the generator φ is Walsh p-adic refinable in addition. In particular, the dilates form a p-adic GMRA for L 2 (R + ) if and only if ∪ j∈Z p j supp(Fφ)=R + , where F is the Walsh p-adic Fourier transform on L 2 (R + ). It is worth noticing that our results are similar to the case of usual L 2 (R), while their proofs are nontrivial. It is because the p-adic addition ⊕ on R + is different from the usual addition + on R. © 2019, Chinese Academy of Sciences. All right reserved.

Keyword:

Frame; p-adic wavelet frame; Walsh p-adic refinable function

Author Community:

  • [ 1 ] [Zhang, Y.]School of Mathematics and Information Science, North Minzu University, Yinchuan, 750021, China
  • [ 2 ] [Li, Y.Z.]College of Applied Sciences, Beijing University of Technology, Beijing, 100124, China

Reprint Author's Address:

  • 李云章

    [Li, Y.Z.]College of Applied Sciences, Beijing University of TechnologyChina

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Source :

Acta Mathematica Sinica, Chinese Series

ISSN: 0583-1431

Year: 2019

Issue: 1

Volume: 62

Page: 1-12

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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