Construction of dual B-spline functions

Using new properties of dual functions, we show that the method of constructing the dual bases recently presented in [P. Wozny, Construction of dual bases, Journal of Computational and Applied Mathematics 245 (2013) 75-85] can be significantly simplified. Next, we propose a simple algorithm of constructing the dual B-spline functions, which can be useful in solving some approximation problems related to numerical analysis or computer graphics.

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