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Results tagged with convolution
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user 36972
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Accepted
If the convolution of two functions $f\star g$ is equal to $g$, $f$ is even with compact sup...
The sought-after statement is wrong: $g$ can be non-constant. Fourier transforming your conditions we see that the Fourier transform $\hat{g}$ is supported at points where $\hat{f}$ is equal to $1$. …
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