Hi List,

I have a conceptual question about compressed sensing, and it has
nothing to do with Python (yet!).

So I don't know if it is appropriate to ask this question on this
mailing list. Please excuse me.

Suppose I have an array X with N dimensions, and after a linear
transformation I get an array X_hat which is S-sparse, where S<<N.

Is this condition sufficient to recover the signal through random
(enough) sampling? What mathematical relations should apply on S and N
to ensure sparse recovery?

How randomly should I sample the transformed signal X_hat to ensure a
good recovery?

Thanks

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