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Ridgelets and the Representation of Mutilated Sobolev Functions
Sobolev spaces Fourier transform singularities ridgelets orthonormal ridgelets nonlinear approximation sparsity
2015/6/17
We show that ridgelets, a system introduced in [4], are optimal to represent smooth multivariate functions that may exhibit linear singularities. For instance, let {u · x − b > 0} be an arbitrar...