Some results on convolution idempotents
Some results on convolution idempotents
We consider the problem of recovering N length vectors h that vanish on a given set of indices and satisfy h <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">*</sub> h = h. We give some results on the structure of such h when N is a product of two primes, and investigate some bounds and …