e/Dual wavelet

Information
has gloss	eng: In mathematics, a dual wavelet is the dual to a wavelet. In general, the wavelet series generated by a square integrable function will have a dual series, in the sense of the Riesz representation theorem. However, the dual series is not in general representable by a square integral function itself.
lexicalization	eng: dual wavelet
instance of	c/Duality theories