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Diagonal of a Matrix

  1. May 29, 2005 #1
    Dumb question, but just say you have a Matrix in the form

    0 0 0
    0 4 0
    0 0 5

    Is it still considered a diagonal matrix if the (1,1) entry is a 0?
  2. jcsd
  3. May 29, 2005 #2


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    Yes, that's still a diagonal matrix. The zero matrix is also a diagonal matrix, the definition doesn't care what's on the main diagonal, only that everything else is zero.
    Last edited: May 29, 2005
  4. May 29, 2005 #3
    Thank you!
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