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Macaulay2Doc :: chainComplex(Matrix)

chainComplex(Matrix) -- make a small chain complex

Synopsis

Description

i1 : R = QQ[x,y];
i2 : f = vars R

o2 = | x y |

             1       2
o2 : Matrix R  <--- R
i3 : chainComplex f

      1      2
o3 = R  <-- R
             
     0      1

o3 : ChainComplex
i4 : HH oo

o4 = 0 : cokernel | x y |

     1 : image {1} | -y |
               {1} | x  |

o4 : GradedModule

See also