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math.FA2013★ 2 cited
Sharp results for the Weyl product on modulation spaces
Elena Cordero, Joachim Toft, Patrik Wahlberg
We give sufficient and necessary conditions on the Lebesgue exponents for the Weyl product to be bounded on modulation spaces. The sufficient conditions are obtained as the restric…
math.FA2013★ 1 cited
Exponentially sparse representations of Fourier integral operators
Elena Cordero, Fabio Nicola, Luigi Rodino
We investigate the sparsity of the Gabor-matrix representation of Fourier integral operators with a phase having quadratic growth. It is known that such an infinite matrix is spars…