Recent content by mattTch

  1. mattTch

    Undergrad Proof of Column Extraction Theorem for Finding a Basis for Col(A)

    Why does 3 follow from the definition of RREF?
  2. mattTch

    Undergrad Proof of Column Extraction Theorem for Finding a Basis for Col(A)

    Theorem: The columns of A which correspond to leading ones in the reduced row echelon form of A form a basis for Col(A). Moreover, dimCol(A)=rank(A).