数学物理学报(英文版) ›› 2014, Vol. 34 ›› Issue (2): 285-300.doi: 10.1016/S0252-9602(14)60005-9
李尤发|杨守志*
LI You-Fa, YANG Shou-Zhi*
摘要:
This article aims at studying two-direction refinable functions and two-direction wavelets in the setting R*, s > 1. We give a sufficient condition for a two-direction refinable function belonging to L2(R*). Then, two theorems are given for constructing biorthogonal (orthogonal) two-direction refinable functions in L2(R*) and their biorthogonal (orthogo-nal) two-direction wavelets, respectively. From the constructed biorthogonal (orthogonal) two-direction wavelets, symmetric biorthogonal (orthogonal) multiwaveles in L2(R*) can be obtained easily. Applying the projection method to biorthogonal (orthogonal) two-direction wavelets in L2(R*), we can get dual (tight) two-direction wavelet frames in L2(Rm), where
m ≤s. From the projected dual (tight) two-direction wavelet frames in L2(Rm), symmetric dual (tight) frames in L2(Rm) can be obtained easily. In the end, an example is given to illustrate theoretical results.
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