📁 国家
Reference/Libraries/National lists the web sites of national libraries worldwide, whose content is also presented in English. A national library is a library established by the government of a country, and whose role is to serve as the preeminent repository of information for that country.
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条目 (7+)
University of Iowa: Wavelets, Frames, Operator Theory
http://www.math.uiowa.edu/~jorgen/waveletFRG.html