Recent content by eg0

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    Undergrad Why does a matrix of all ones have rank 1, not 0?

    Thank you. So I was wrong mainly because I had not understood the notion of linearly (in)dependence...
  2. E

    Undergrad Why does a matrix of all ones have rank 1, not 0?

    Hi I don't understand why only a matrix full of zero has a rank = 0. "the rank of a matrix A is the number of linearly independent rows or columns of A" If I have a 3x3 matrix A = [ 1 1 1 1 1 1 1 1 1 ] assuming a_i denotes the column or row vector i of A. I can say...