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Compactly Supported Orthogonal Symmetric Scaling Functions

✍ Scribed by Eugene Belogay; Yang Wang


Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
148 KB
Volume
7
Category
Article
ISSN
1063-5203

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✦ Synopsis


Daubechies (1988, Comm. Pure Appl. Math. 41, 909-996)

showed that, except for the Haar function, there exist no compactly supported orthogonal symmetric scaling functions for the dilation q = 2. Nevertheless, such scaling functions do exist for dilations q > 2 (as evidenced by Chui and Lian's construction (1995, Appl. Comput. Harmon. Anal. 2, 68-84) for q = 3); these functions are the main object of this paper. We construct new symmetric scaling functions and introduce the "Batman" family of continuous symmetric scaling functions with very small supports. We establish the exact smoothness of the "Batman" scaling functions using the joint spectral radius technique.


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