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isSurjective Matrix -- whether a map is surjective

Synopsis:

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

         -- ../m2/matrix1.m2:703
         isSurjective Matrix := (f) -> cokernel f == 0

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