Zhong-Qi Xiang

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Background The origins of the notion of frames can be traced back to the literature Duffin and Schaeffer (1952) in the early 1950’s, when they were used to deal with some problems in nonharmonic Fourier series. People did not realize the importance of frames until the publication of the fundamental paper Daubechies et al. (1986) on wavelet theory due to(More)
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