Review 1: 91 - THU

(3) The row space of A (the column space of AT), R(AT) (4) The left null space of A, N(AT), contains all vectors : y . AT = 0. The row space of A R(AT) has the same dimension r as the row space of U and it has the same bases because the two row spaces are the same. The null space of A N(A) is the same as the null space of U. ................
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