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isIsomorphism Matrix -- whether a map is an isomorphism

Synopsis:

  • Function: isIsomorphism -- whether a map is an isomorphism
  • Input:
  • an instance of class Matrix.
  • Output:
  • an instance of class Boolean.
  • Code:

         -- ../m2/matrix.m2:215
         isIsomorphism Matrix := f -> coker f == 0 and ker f == 0

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