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from Part Three - Compressive Sensing
Published online by Cambridge University Press: 21 April 2022
This chapter is concerned with the number of linear observations enabling the standard compressive sensing problem to be solved in a stable way. The upper estimate derived from the previous chapter is matched by a lower estimate obtained by a combinatorial argument. A connection with the Gelfand width of ?1-balls is then drawn. Finally, it is explained why stability quantified in ?2 is irrelevant in the context of compressive sensing.
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