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Solution to Simple Matrix Equation

  1. Oct 11, 2007 #1
    If a matrix squared is equal to the original matrix, does that mean that the original matrix had to be either the zero matrix or the identity matrix?

  2. jcsd
  3. Oct 11, 2007 #2


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    Science Advisor

    Not necessarily. Any diagonal matrix with ones and zeros along the diagonal will have this property.
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