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To construct a multivariate B-spline, we simply take the Kronecker tensor product between the univariate basis functions constructed for each individual dimension.

What I'd like to know is how do you construct a B-spline derivative for a multivariate function? Is it the same method of using the tensor product, but with the univariate B-spline derivatives?

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    Where else would you get the *partial* derivatives needed by the B-spline? ;)2010-12-02

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