Britannica is the last word student resource for key school topics like historical past, authorities, literature, and more. 2The branch of arithmetic that offers with numbers and their properties known as Number Theory. The non-zero elements are the parts that carry the important data in x. The real problem lies in the development of the matrix A and the algorithms used to reconstruct x or a good approximation thereof from the received data y. Because y has fewer parts than x, this process is called data compression.
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