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Math Help - Eigenvalues/vectors

  1. #1
    Junior Member
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    Eigenvalues/vectors

    I know I can check if they are correct using A\vec{e} = \lambda\vec{e}

    But how can I tell if Eigenvectors are cross row or cross column?
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  2. #2
    A Plied Mathematician
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    I don't exactly know what you mean by "cross row" or "cross column". The eigenvalue problem is defined by the equation you have related. In that equation, \vec{e} is a column vector. If you were to try to formulate an eigenvalue problem using row vectors, it would look like this:

    \vec{e}^{\;T}A^{T}=\lambda\vec{e}^{\:T}.

    Is this what you meant?
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