Rosetak Document 4: Rank Degeneracies and Least Square Problems
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In this paper we shall be concerned with the following problem. Let A be an m x n matrix with m being greater than or equal to n, and suppose that A is near (in a sense to be made precise later) a matrix B whose rank is less than n. Can one find a set of linearly independent columns of A that span a
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美国国家经济研究局创建时间：
1977-02-01
